# CBSE Class 9 Answered

**diameter of the base of a cone is 10.5cm and its slant height is 10cm. Find its curved surface area**

Asked by anmolmahali | 14 Nov, 2019, 07:33: PM

Expert Answer

The diameter of the base of a cone is 10.5 cm.

d = 10.5 cm then r = 10.5/2 = 5.25 cm

*l*= 10 cm

Curved suraface area of cone = ∏r

*l*= 22/7 × 5.25 × 10 = 165 cm^{2}
Answered by Sneha shidid | 15 Nov, 2019, 09:17: AM

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