Question

The diameter of cone is 14cm it's slant height is 9cm .Find its CSA and TSA.​

Answer 1

$\blue{\bold{\underline{\underline{Answer:}}}}$

$\green{\tt{\therefore{C.S.A\:of\:cone=198\:cm^{2}}}}$

$\green{\tt{\therefore{T.S.A\:of\:cone=352\:cm^{2}}}}$

$\orange{\bold{\underline{\underline{Step-by-step\:explanation:}}}}$

$\green{\underline \bold{Given :}} \\ \tt: \implies Slant\:height \: of \:cone = 9 \: cm \\ \\ \tt: \implies Radius \: of \:cone = 7 \: cm \\ \\ \red{\underline \bold{To \: Find:}} \\ \tt: \implies C.S.A\: of \: cone = ? \\ \\ \tt: \implies T.S.A \: of \: cone = ?$

• According to given question :

$\bold{As \: we \: know \: that} \\ \tt: \implies C.S.A \: of \: cone = \pi rl \\ \\ \tt: \implies C.S.A \: of \: cone =\frac{22}{7} \times 7 \times 9 \\ \\ \green{\tt: \implies C.S.A \: of \: cone =198 \: {cm}^{2} } \\ \\ \bold{As \: we \: know \: that} \\ \tt: \implies T.S.A \: of \: cone =\pi r(l +{r}) \\ \\ \tt: \implies T.S.A \: of \: cone = \frac{22}{7} \times 7(9 + 7) \\ \\ \tt: \implies T.S.A\: of \: cone =22 \times 16 \\ \\ \green{\tt: \implies T.S.A \: of \: cone =352 { \: cm}^{2} }$

Answer 2

$\tt{\huge{\orange{Hello!!!}}} B.Q.$

QUESTION :

The diameter of cone is 14cm it's slant height is 9cm .Find its CSA and TSA.

ANSWER :

CSA of cone is equal to 198 square cm.

TSA of cone is equal to 352 square cm.

SOLUTION :

SOLUTION :

CSA of cone = πrl = 22/7 × ( 14 / 2 ) × 9 = 198 cm^2

TSA of cone = πr ( l + r ) = 22/7 × 7 × 16 = 352 cm^2