Question

the radius of a circular garden is 56 m . what would it cost to put a 4 round fence around this garden at arate of 40 rupees per metre ?

Answer 1

Radius=56m
Preimrt of circle=2*22/7*56
=352
Length of fence=352*4=1408m
Cost =1408*40=56320₹.

Answer 2

Circumference of a circle = 2πr
Here, I take π as 22/7
Radius of the garden = 56 m
then, 2*22/7*56
= 352 m

therefore, circumference of the garden is 352 m

for 4 rounds = 352*4= 1408m

given that, per meter it costs RS.40

then, for fencing 1408 m, it will cost 1408*4
=5632

therefore, for fencing 1408 m , it will cost RS.5632

hope it helped

thank you