Math, asked by neha6013, 1 year ago

a joker cap is the from of a right circlar cone of base radius 7cm and height 24cm .find the area of the sheet required to make 10 such caps..

Answers

Answered by Noah11
8
\large{\boxed{\bold{Answer:}}}

r = 7cm

h = 24cm

Slant \: Height \: (l) = \sqrt{ {r}^{2} + {h}^{2} } \\ \\ = \sqrt{(7 {)}^{2} + (24 {)}^{2} } \\ \\ = \sqrt{49 + 576} \\ \\ = \sqrt{625} = 25cm

C. S. A of a cap = πrl

 = \frac{22}{7} \times 7 \times 25 = {550cm}^{2}

C.S.A of 10 caps

 = 550 \times 10 \: = \: 5500 \: c {m}^{2}

Hence, the area required of the sheet required to make 10 such caps is 5500 cm²

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