Respuesta :

Matheng
Area of canvas = total area of the cone = π r ( r + s )
r ⇒⇒⇒ radius
s ⇒⇒⇒ slant height

the base has 20 feet across  ⇒⇒ diameter = 2 r = 20
r = 20/2 = 10    and    s = 14

Area = 10 * 3.14 ( 10 + 14 ) = 753.6 ≈ 754

The correct answer is the third

aencabo
The answer is 754 ft^2

Solution:
Given:
Area of canvas = total area of the cone = π r ( r + s )r =radius s = slant height 
the base = 20 feet across 
diameter = 2 r = 20r = 20/2 = 10   
and   
s = 14
Area = 10 * 3.14 ( 10 + 14 )
= 753.6
 ≈ 754