Question

2. The curved surface area of a cone is 528cm and its slant height is 24cm. Find
the radius of the base and total surface area of the cone​

Answer 1

Step-by-step explanation:

CSA of cone = πrl

528 cm^2 = 22/7 × r × 24

528×7/22×24 = r

r = 7 cm

TSA of cone = πr(r+l)

= 22/7×7(7+24)

= 22×31 cm^2

= 682 cm^2