Question

Find the surface area of a cone.

• A. $8635m^2$
• B. $86.35m^2$
• C. $0.8635m$
• D. $8.635m^2$

Answer 1

Answer: (D)

Surface area of a cone $=\pi rs+\pi r^2$

$=3.14\times \frac{1}{2}\times 5+3.14\times \frac{1}{2}\times \frac{1}{2}$

$=7.85+0.785$

$=8.635m^2$

So, option D is correct.