Page 31 - CITS - WCS - Mechanical

WORKSHOP CALCULATION - CITS

Assignment

Circle
1 Find the circumference and area of a circle whose radius is 10.00 metre.
2 Find its diameter if the area of a circle is 330 cm².
3 Find its area if the circumference of a circle is 50 cm.
4 Find out the area and circumference of a circle of diameter is 50 cm.
5 Find its area if the circumference of a circle is 44 cm.
Semi circle
1 Calculate the circumference and area of semi circle whose radius is 14 cm.
2 Find area of the given figure.

Circular ring
1 Find out area of a ring washer, whose inner radius and outer radius are 13 cm and 15 cm respectively.

2 Find the area of a ring portion of a washer whose outer dis is 30 m and inner dis is 20 m. Also calculate the
difference between the circumference of circles.
Sector of circle
1 Find the perimeter and area of a sector of a circle of radius 5cm and its angle is 96°.

2 Find the radius of the circle if the angle is 90° and the area of sector of a circle is 196 cm².
Hexagon
1 Find out the Area, perimeter, DAF, and DAC of hexagon of side 4cm.
2 Find the area of cross section of a regular hexagon rod whose side is 7.5 cm.

Ellipse
1 Find the area of the biggest ellipse that can be inscribed in a rectangle of length 18 cm and breadth 12 cm. Also
calculate its perimeter.

2 How much fencing will be required to enclose an elliptical plot of ground the axes of the ellipse being 200 and
170 meter respectively
Cube

1 Find the diagonal, lateral surface area,, total surface area and volume of a cube of side 4.5 cm.
side a = 4.5 cm
diagonal d = a unit
= 1.732 x 4.5

= 7.794 cm
L.S.A = 4a² unit²
= 4 x 4.5 x 4.5
= 81 cm²

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CITS : WCS - Mechanical - Exercise 5