Question

solution of all question please

Answer 1

ques no.9
1. volume =l×b×h
=10.5×8×6
=504cm cube

Answer 2

hey mate ....
pls just use the following formulas as per the question where which is required for
Surface Areas

The surface area of various solid shapes are given below:

Cuboid: 2(lb+bh+hl), where l, b and h are the length, breadth and height of a cuboid.

Cube: 6a2, a is the side of the cube.

Cylinder: 2πr (r+h), r is the radius of circular base and h is the height of the cylinder.

Cone: πr(l+r), r is the radius of the circular base, l is the slant height of the cone.

Sphere: 4πr2, r is the radius of the sphere.

Hemisphere: 3πr2, r is the radius of the hemisphere.

Volumes

Volume is the capacity of any solid shape. The formulae for volumes of various shapes are:

Cuboid: l × b × h, where l , b and h are the length, breadth and height of a cuboid.

Cube: s3, s is the side of the cube.

Cylinder: πr2 h, r is the radius of circular base and h is the height of the cylinder.

Cone: 1/3 πr 2h, r is the radius of the circular base, l is the slant height of the cone.

Sphere: 4/3 πr3, r is the radius of the sphere.

Hemisphere: 2/3 πr3, r is the radius of the hemisphere.

hope it helps u mate....
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