Which circles have an area of 9pi. m^2?

Choose all answers that are correct.

A.
a circle with a radius of 3 m

B.
a circle with a diameter of 6 m

C.
a circle with a radius of 9 m

D.
a circle with a diameter of 9 m

Question

Which circles have an area of 9pi. m^2?
 
Choose all answers that are correct.
 
 A.
a circle with a radius of 3 m
 
 B.
a circle with a diameter of 6 m
 
 C.
a circle with a radius of 9 m
 
 D.
a circle with a diameter of 9 m

faiqraees · Answer

Area = πr²
9π = πr²
9=r²
r=3
Radius should be 3 metres

anonymous · Answer

It's a multiple choice problem

rishavraj · Answer

see in some options u got diameter...
radius = diameter/2
and then u can calculate which circles hav the area  9*pi