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Mathematics

Grade-7

Easy

Question

The map of a land given below is in yards. If the scale is given as 1 cm = 2 feet, determine the perimeter of the land in feet

104
150
138
145

hint Hint:

perimeter = sum of all the side

The correct answer is: 104

perimeter = sum of all the side
16 + 10 + 12 + 14 = 52 cm,

so perimeter = 52 cm
in the question given 1cm = 2feet
so 52 cm = 52 x 2
104 feet answer
second method,
$fraction numerator 2 over denominator 1 end fraction equals fraction numerator x over denominator 52 end fraction$
$fraction numerator 2 over denominator 1 end fraction cross times 52 equals fraction numerator x over denominator 52 end fraction cross times 52 comma$ $fraction numerator 2 cross times 52 over denominator 1 end fraction equals x$
x = 104 feet.

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