Question

Find the radius and circumference of a circle,
whose area is :
m 154 cm2 (ii) 6.16 m2​

Answer 1

Step-by-step explanation:

Hello frnd!!

here's ur answer...

1. given:-

area=154cm²

πr²=154cm²

22/7×r²=154cm²

r²=154/1×7/22

r²=7×7

r²=49

r=√49

r=7cm

therefore circumference of the circle=2πr

=2×22/7×7

=44cm

2. given:-

area=6.16m²=616cm²

πr²=616cm²

22/7×r²=616cm²

r²=616/1×7/22

r²=4312/22

r²=196

r=√196

r=14cm

therefore circumference of the circle=2πr

=2×22/7×14

=44×2

=88cm

hope this helps...