Question

12
Eind the area of a square park whose perimeter 15 OU III.
The perimeter of a rectangular sheet is 170 cm. If its breadth is 15 cm less than its length, find
length. Also find its area.
3. The length and breadth of a rectangular piece of land are 200 m and 150 m respectively. Find the t​

Answer 1

Explanation:

1.)

Perimeter of park = 15 cm

4×side = 15cm

Side= 15/4

= 3.75 cm

Area of square = (Side)²

= (3.75)²

= 14.0625 cm²

2.)

Length = x

Breath = x - 15

Perimeter of rectangle=170cm

2(L+B) = 170cm

2(x + x - 15) = 170cm

2x+2x-30 = 170 cm

4x-30 = 170 cm

4x = 170 - 30

4x = 140 cm

x = 140/4

x = 35 cm

Area of rectangle= L × B

Length = x = 35cm

Breath = x - 15

= 35 - 15 = 20 cm

Area of rectangle= 35 × 20

= 700 cm²

3.)

Length of Rectangle= 200 m

Breath of Rectangle= 150 m

Area of rectangle = L × B

= 200 × 150

= 30,000 cm²

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