Page 89 - WCS - Electrical

WORKSHOP CALCULATION & SCIENCE - CITS

Diameter of the ball = 2 x r

= 2 x 3
= 6 cm

Assignment

Cube
1 Find the diagonal, lateral surface area, total surface area and volume of cube, whose side is 15 cm.
2 Find the volume of 10 cubes where each side is 5 cm.
3 Find its volume if a solid cube has each of its sides 60 mm long.

4 What is its side if the total surface area of a cube is 384 m².
Cuboid
1 Find the volume of the tank in m³, if the length is 60 m, breadth 40 m and height 20 m.
2 Find the volume of a C.I. casting of a rectangular block having 25 cm x 20 cm x 8 cm size.

3 Calculate the total surface area of a box whose length, width and height are 120 cm, 50 cm and 60 cm
respectively.
4 Find the volume of the sheet if a brass sheet is of 25 cm square and 0.4 cm thick.
Cylinder

1 Find the curved surface area of cylinder whose diameter is 18 cm and height 34 cm?
2 Find the total surface area of cylinder whose diameter is 24 cm and height 40 cm?
3 Find out the volume of cylinder whose base is 10 cm radius and height is 40 cm?
Sphere
1 Find the volume of sphere having diameter 3.5cm?

2 Find the total surface area of a sphere having radius 1.75 cm?
3 How many spherical balls of 1 cm radius can be made from a sphere of 16 cm diameter.
4 Three balls of diameter 2m, 4cm and 6 cm are melted and made into one solid ball. If there is no wastage, find
the diameter of solid ball.

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CITS : WCS - Electrical - Exercise 6