Question

find the curved surface area of a cone with base radius 5.25cm and skant height 10 cm​

Answer 1

Formula of C.S.A of cone is πrl .

✯ → Here r refers to base radius and l refers to the slant height

A/q

Base radius of given cone = 5.25 cm

Slant height of given cone = 10 cm

We have to find out the curved surface area of given cone .

Applying the formula of C.S.A =>

C.S.A = πrl

→ C.S.A = (22/7)×(5.25)×(10)

→ C.S.A = (52.5×22)/7

→ C.S.A = 1155/7

→ C.S.A = 165cm²

So required curved surface area of cone is 165cm²

→ ✯

• Total surface area of cone = πr(r+l)
• Volume of cone =( 1/3)πr²h
• Slant height = √ h²+r²