Q.1.
The area of a wall is 12 m . A can of paint can cover an area of 5 m . How many cans of paint will be required to cover the wall?
Q.2.
If the diameter of a circle is 14 cm, what is its circumference (assume that π = 3.142)?
Q.3.
A right-angled triangle has a side length of 12 cm. How many of these triangles will fit onto a square whose sides are 28 cm long, without overlapping or going over the edge of the square?
Q.4.
The area of a right-angled triangle is 225 cm . If its base is 15 cm, what is its height?
Q.5.
A heptagon is a seven-sided shape. What is the perimeter of a regular heptagon if one of its sides is of length 19.3 cm?
Q.6.
If the circumference of a circle is 44 cm, what is its radius (assume that π = 3.142 and round your answer to the nearest whole number)?
Q.7.
If the diameter of a circle doubles, what will happen to the area?
Q.8.
If you double the length of the sides of a square, what will happen to its area?
Q.9.
The perimeter of a square is 28 cm. What is its area?
Q.10.
The surface area of a cube is 384 cm . How tall is the cube?