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The lateral area of a right cone which has a base diameter of 4 units and a height of 10 units is:

A) 251.2 units squared.

B) 125.6 units squared.

C) 64.0 units squared.

D) 31.4 units squared.

pwolfey  Nov 16, 2017

Best Answer 

 #1
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Radius = Diameter/2

R =4/2 =2

Vertical Height =10

10^2 + 2^2 =Slant Height

Slant Height =10.198

Lateral Area = Slant height x Pi x Radius

                        =10.198 x 3.141592 x 2

                         =~64 units squared

Guest Nov 16, 2017
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1+0 Answers

 #1
avatar
+1
Best Answer

Radius = Diameter/2

R =4/2 =2

Vertical Height =10

10^2 + 2^2 =Slant Height

Slant Height =10.198

Lateral Area = Slant height x Pi x Radius

                        =10.198 x 3.141592 x 2

                         =~64 units squared

Guest Nov 16, 2017

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