Question

the lateral surface on the total surface area of a cylinder with base radius 7m and height 9m are respectively​

Answer 1

Answer:

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9th

Maths

Surface Areas and Volumes

Volume of Cube, Cuboid and Cylinder

Find the lateral surface ar...

MATHS

Asked on December 26, 2019 byOorja Londhe

Find the lateral surface area and the total surface area of a cylinder with base radius 7 m and height 9 m

A

396 m2, 704 m2

B

704 m2, 396 m2

C

396 m, 704m

D

704m, 396m

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ANSWER

Given s= 7m, h=9 m

Lateral surface area = Area of the curved surface =2πrh=2×722×7m×9m=396m2

Total surface area = Area of curved surface + Area of two circular surfaces

=2πrh+2πr2=396m2+2×722×7m×7m=(396+308)m2=704m2

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Answer 2

Answer:

lateral surface area=396m2

total surface area=704m2

Step-by-step explanation:

given base radius of the cylinder=7m

height of the cylinder=9m

lateral surface area of cylinder=2πrh

=2(22/7)(7)(9)

=396m2

total surface area of cylinder=2πr(h+r)

=2(22/7)(7)(7+9)

=704m2