Question

The area of a circle is 154 cm, then its diameter is.
A) 7 cm
B) 21 cm
C) 40 cm
D) 28 cm

Answer 1

Answer:

14cm

Step-by-step explanation:

Given that,

Area of Circle=154cm²

πr²=154

22/7×r²=154

r²=154÷22/7

r²=154×7/22

r²=49 cm²

r=√49cm²

r= 7 cm

Diameter(d)=2×Radius(r)

=2×7cm

=14cm