Maths-
General
Easy

Question

A circular track has an inside circumference of 1320 m. If the width of the track is 7m, what is the outside circumference

hintHint:

Radius of outer circle is the sum of radius of inner circle and width of the track.

The correct answer is: 1364 m


    It is given that Circumference of inner circle = 1320 m
    straight pi r = 1320
    2 × 22 over 7 × r  = 1320
    r  =  210 m
    Radius of outer circle = Radius of inner circle +Width of track
    = 210 + 7 = 217 m
    Circumference of outer circle = 2 straight pi r
    = 2 × 22 over 7 × 217
    = 1364 m

    Related Questions to study

    General
    Maths-

    In 2015 the populations of City X and City Y were equal. From 2010 to 2015 , the population of City X increased by 20% and the population of City  decreased by 10%. If the population of City  was 120,000 in 2010 , what was the population of City Y in 2010?

    In 2015 the populations of City X and City Y were equal. From 2010 to 2015 , the population of City X increased by 20% and the population of City  decreased by 10%. If the population of City  was 120,000 in 2010 , what was the population of City Y in 2010?

    Maths-General
    General
    Maths-

    The area enclosed between two concentric circles is 770 cm2. If the radius of the outer circle is 21cm, calculate the radius of inner circle

    The area enclosed between two concentric circles is 770 cm2. If the radius of the outer circle is 21cm, calculate the radius of inner circle

    Maths-General
    General
    Maths-


    A researcher surveyed a random sample of students from a large university about how often they see movies. Using the sample data, the researcher estimated that 23% of the students in the population saw a movie at least once per month. The margin of error for this estimation is 4 straight percent sign . Which of the following is the most appropriate conclusion about all students at the university, based on the given estimate and margin of error?


    A researcher surveyed a random sample of students from a large university about how often they see movies. Using the sample data, the researcher estimated that 23% of the students in the population saw a movie at least once per month. The margin of error for this estimation is 4 straight percent sign . Which of the following is the most appropriate conclusion about all students at the university, based on the given estimate and margin of error?

    Maths-General
    parallel
    General
    Maths-

    If x equals 5 plus 2 square root of 6, then find the value of x squared plus 1 over x squared

    If x equals 5 plus 2 square root of 6, then find the value of x squared plus 1 over x squared

    Maths-General
    General
    Maths-

    A right circular cone has a volume of 24 pi cubic inches. If the height of the cone is 2 inches, what is the radius, in inches, of the base of the cone?

    A right circular cone has a volume of 24 pi cubic inches. If the height of the cone is 2 inches, what is the radius, in inches, of the base of the cone?

    Maths-General
    General
    Maths-

    In the given figure OACB is a quadrant of a circle. The radius OA = 3.5 cm, OD = 2cm. Calculate the area of shaded portion

    In the given figure OACB is a quadrant of a circle. The radius OA = 3.5 cm, OD = 2cm. Calculate the area of shaded portion

    Maths-General
    parallel
    General
    Maths-

    The inner circumference of a circular track is 220 m. The track is 7 m wide everywhere. Calculate the cost of putting up a fence along the circumference of outer circle at the rate of Rs 2 per meter

    The inner circumference of a circular track is 220 m. The track is 7 m wide everywhere. Calculate the cost of putting up a fence along the circumference of outer circle at the rate of Rs 2 per meter

    Maths-General
    General
    Maths-

    Is 5 over 7  rational or irrational? Explain.

    Is 5 over 7  rational or irrational? Explain.

    Maths-General
    General
    Maths-

    How many times will the wheel of a car rotate in a journey of 88 km if its known that the diameter of the wheel is 56 cm?

    How many times will the wheel of a car rotate in a journey of 88 km if its known that the diameter of the wheel is 56 cm?

    Maths-General
    parallel
    General
    Maths-

    Express the following recurring decimal as a vulgar fraction
    1.3454545454545…………

    Express the following recurring decimal as a vulgar fraction
    1.3454545454545…………

    Maths-General
    General
    Maths-

    A road 3.5 m wide surrounds a circular park whose circumference is 44 m. Find the cost of paving the road at Rs. 20 per m2

    A road 3.5 m wide surrounds a circular park whose circumference is 44 m. Find the cost of paving the road at Rs. 20 per m2

    Maths-General
    General
    Maths-

    h left parenthesis x right parenthesis equals 2 to the power of x
    The function  is defined above. What is h left parenthesis 5 right parenthesis minus h left parenthesis 3 right parenthesis ?
     

    h left parenthesis x right parenthesis equals 2 to the power of x
    The function  is defined above. What is h left parenthesis 5 right parenthesis minus h left parenthesis 3 right parenthesis ?
     

    Maths-General
    parallel
    General
    Maths-

    Of the following, which is closest to the ratio of the total number of insects in all three colonies in week 8 to the total number of insects at the time of initial treatment?

    Three colonies of insects were each treated with a different pesticide over an 8-week period to test the effectiveness of the three pesticides. Colonies A, B, and C were treated with Pesticides A,B , and C, respectively. Each pesticide was applied every 2 weeks to one of the three colonies over the 8-week period. The bar graph above shows the insect counts for each of the three colonies 0,2,4,6, , and 8 weeks after the initial treatment.

    Of the following, which is closest to the ratio of the total number of insects in all three colonies in week 8 to the total number of insects at the time of initial treatment?

    Three colonies of insects were each treated with a different pesticide over an 8-week period to test the effectiveness of the three pesticides. Colonies A, B, and C were treated with Pesticides A,B , and C, respectively. Each pesticide was applied every 2 weeks to one of the three colonies over the 8-week period. The bar graph above shows the insect counts for each of the three colonies 0,2,4,6, , and 8 weeks after the initial treatment.

    Maths-General
    General
    Maths-

    Express the following recurring decimal as a vulgar fraction
    0.15151515………..

    Express the following recurring decimal as a vulgar fraction
    0.15151515………..

    Maths-General
    General
    Maths-

    Simplify by rationalizing:fraction numerator 7 plus 3 square root of 5 over denominator 7 minus 3 square root of 5 end fraction

    Simplify by rationalizing:fraction numerator 7 plus 3 square root of 5 over denominator 7 minus 3 square root of 5 end fraction

    Maths-General
    parallel

    card img

    With Turito Academy.

    card img

    With Turito Foundation.

    card img

    Get an Expert Advice From Turito.

    Turito Academy

    card img

    With Turito Academy.

    Test Prep

    card img

    With Turito Foundation.