Question

Diameter of the base of come is 10.5cm and it's slant height 10cm find its curved surface are\

Answer 1

volume of the cone=(22/7)5.25x5.25x10
               =8662.5

Answer 2

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$\therefore$ Diameter of the base = 10.5cm

$\therefore$ Radius of the base(r) = $\large\dfrac{10.5}{2}$ cm

= 5.25cm

Slant height (l)=10cm

$\therefore$ Curved surface area of the cone = πrl

= $\large\dfrac{22}{7}$ × 5.25×10

= ${\large{\boxed{\sf{165cm²}}}}$

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