CBSE BOARD X, asked by Deepaksri79, 16 days ago

Find the CSA of the right circular cone whose radius is 7cm and the slant height is 4cm​

Answers

Answered by ImpressAgreeable4985
0

Curved surface area =πrl

                                  =

7

22

×7×10

                                  =220 cm

2

Given, Radius of cone, r=7cm and Height, h=24cm.

To find slant height l:

We know, l

2

=r

2

+h

2

⟹ l

2

=7

2

+24

2

⟹ l

2

=625

⟹ l=25cm.

Therefore, curved surface area of cone is =πrl

=

7

22

×7×25

=22×25

=550cm

2

.

Hence, the curved surface area of cone is 550cm

2

.

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Answered by sabarish13052011
0

Answer:

Curved surface area =πrl

                                 =

7

22

×7×10

                                 =220 cm

2

Given, Radius of cone, r=7cm and Height, h=24cm.

Explanation:

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