Question

The surface area of a cone with radius r units and slant height s units is shown below:

30 points
Surface area = 3.14(rs + r2)

Part A: If r = 3 units and s = 5 units, write an expression that can be used to calculate the surface area of the cone. (4 points)

Part B: What is the surface area of the cone? Show your work. (6 points)

Answer 1

Explanation:

part A:

`Area_{_(surface)}=3.14*(3*5+3^2);`

part B:

`Area_{_(surface)}=3.14*(15+9)=3.14*24=75.36[units^2].`