Question

What is the surface area of a cone having a slant height equal to 7.25 cm and radius equal to 3.5 cm?

Answer 1

A≈118.2

Explanation:

r= Radius= 3.5

l= Slant height= 7.25

A= πrl+πr2= π·3.5·7.25+π·3.52≈118.20242