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Mathematics

Grade-7

Easy

Question

The area of a room is $261 over 4 space straight m squared$ . If its breath is $87 over 16$ metre length of the room is _______meter.

10
11
12
13

hint Hint:

Use the formula of area of rectangle (i.e Area = length * breath ) to find the breath

The correct answer is: 12

STEP BY STEP SOLUTION
Area of the room = $261 over 4 space m squared$
Breath of the room = $87 over 16 m$
Area of the room = breath $cross times$ Length
Length of the room = $fraction numerator A r e a space o f space t h e space r o o m space over denominator B r e a t h space o f space t h e space r o o m space end fraction$
Length of the room =
$261 over 4 space divided by space 87 over 16 space space 261 over 4 space cross times space 16 over 87 space fraction numerator 261 space cross times space 16 over denominator 4 space cross times space 87 end fraction space equals space 3 space cross times space 4 space equals space 12$
The length of the room is 12m

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