Question

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7. The perimeter of a square field is numerically equal to its area. Find each side of the square.
8. A rectangular piece of paper has area = 24 cm2 and length = 5 cm. Find its perimeter.
s. Find the perimeter of a rectangle whose area = 2600 m2 and breadth = 50 m.​

Answer 1

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

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7) given,

perimeter of square = area of square

.: let, the side of the square be 's'

perimeter of the square = 4*side =4s

area of square =(side)² = s²

.: 4s = s²

4 = s²/s

4 = s

.: side of the square = 4units

8) given,

length of rectangle 'l' = 5cm

area of rectangle = 24cm²

let, breadth of rectangle be 'b'

.: area of rectangle = length*breadth = l*b

.: l*b = 24cm²

5cm*b = 24cm²

b = 24cm²/5cm = 24/5cm

.: perimeter of rectangle = 2(l+b)

= 2(5cm+24/5cm)

= 2(49/5cm)

= 98/5cm

9) given,

area of rectangle = 2600m²

breadth of rectangle 'b' = 50m

let the length of the rectangle be 'l'

.: area of rectangle = l*b

2600m² = l*50m

l = 2600m²/50m

l = 520m

.: perimeter of the rectangle = 2(l+b)

= 2(520m+50m)

= 2(570m)

= 1140m