Two cones are similar. the surface area of the larger cone is 65π square inches. the surface area of the smaller cone is 41.6π square inches. the radius of the smaller cone is 6.4 inches. what is the radius of the larger cone?
8 inches
10 inches
11.52 inches
14.4 inches

Step

Find the scale factor

we know that

in this problem we have

Substitute the values

Step

Find the radius of the larger cone

we know that

in this problem we have

substitute

therefore

the answer is

the radius of the larger cone is

the answer is d. 75%

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm