Question

Find the surface area of the solid. If necessary, round your answer to the nearest whole number

Answer 1

Given:

radius (r) = 5m & slant height (l) = 11m

Formula:

$\text{Surface are of a cone= }\pi rl+\pi r^2$$\text{Surface area of a cone= }\frac{22}{7}\times5\times11+\frac{22}{7}\times5^2$$\text{Surface area of a cone=}\frac{22}{7}(55+25)$$\text{Surface area of a cone=}\frac{22}{7}(80)$$\text{Surface area of a cone=}251.43m^2$

Rounding to the nearest whole number

$\text{Surface area of a cone=}251m^2$