Question

13. Each side of a square field is 20 m. There is another field and ratio of their adjacent sides is 3 : 1. If the
perimeter of both the fields are same, find the dimensions of the rectangular field.
14. The perimeter of a regular heptagon is 91 cm. Find the length of its one side.​

Answer 1

Answer:

13. Length = 30m , Breath = 10m | 14. One side is 13cm Long

Step-by-step explanation:

13.

let the breath of field be = x

So the length will be       = 3x

Given that the Perimeter of both the Fields is same

Perimeter of Square = Perimeter of Rectangle

4*s = 2(l+b)

4*20 = 2(l+b)

80/2 = 3x + x

40 = 4x

x = 10m

3x = 30m

14.

A heptagon has 7 equal sides

So it's perimeter = 7*s

91 = 7*s

s = 91/7

s = 13cm.