Question

solve the problem
chapter perimeter and area
class 7​

Answer 1

Answer:

The other side is 13cm

Step-by-step explanation:

Because the oppsite sides of a paprllelogram has equal length or it will not be parallel, so if it is15 cm one side the other side is also 15 cm which make up 30 cm, and when

we subtract it with 56 which is 26,and like above the sides are equal we divide it by 2 which is 13 cm.

I hope it helped you :)

Answer 2

Answer:

484 m

Outer diameter = 168 m

Outer radius = \frac{Diameter}{2}

2

Diameter

Outer radius = \frac{168}{2}= 84 m

2

168

=84m

Width of track = 7 m

Inner Radius = 84 m - 7 m = 77 m

Inner circumference = 2 \pi r2πr

Inner circumference = 2 \times \frac{22}{7} \times 772×

7

22

×77

Inner circumference = 484 m484m

Hence circumference of the inner ring is 484 m