Question

The area of a circle is 154cm²find its radius and circumfere
nce

Answer 1

Answer:

Step-by-step explanation:

πr2=154

22/7×r2=154

r2=154*7/22

r2=7*7

r=7

Circumference=2πr=44cm2

Answer 2

Answer:

given:

area= 154 cm²

Step-by-step explanation:

πr²=154

⇒r²=154÷π

⇒r²=154÷22/7

⇒r²= 154×7/22

⇒r²=49

⇒r=√49

⇒r=7cm

∴circumference= 2πr

                           =2×22/7×7

                         = 44cm

hope it helps you!