Find the exact area of the circle with the given diameter.

d = 2.2 m

A.
1.21π m²

B.
2.2π m²

C.
4.4π m²

D.
4.84π m²

Question

Find the exact area of the circle with the given diameter. 

d = 2.2 m
 
 A.
1.21π m²
 
 B.
2.2π m²
 
 C.
4.4π m²
 
 D.
4.84π m²

yinshy · Answer

@MysticFury i think its D

mysticfury · Answer

remember the diameter is twice the radius. so we need to take 2.2 and cut it in half which is 1.1 then apply the formula 3.14 x 1.1 x 1.1 ... its important we cut it in half here because 1.1 x 1.1 isnt 2.2 in this case. its 1.21 therfore thats are answer

yinshy · Answer

so D

mysticfury · Answer

no the answer is A ... 2.2 x 2.2 is indeed 4.84 but we need to take the radius and times it by itself not the diameter