BellaBel BellaBel

23-02-2017
Mathematics

Answered

Find the surface area of a cone with a radius, r, of 5cm and a slant height, l, of 5cm.

A134.4 cm2
B140 cm2
C157 cm2
D163 cm2

Verified Answer :

cameronlgill cameronlgill

23-02-2017

the answer is c 157cm2

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ChandrikaP ChandrikaP

23-02-2017

A=πr(r+√h^2+r^2)

A=π5(5+√25+25)
A=π5(5+√50)
A=189.61cm

sorry u dont have answer in options

are u sure both height and radius=5 cm?

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