Q.1.
The area of a right-angled triangle is 108 cm . If its base is 12 cm, what is its height?
Q.2.
Circle A has an area of 12 cm . Circle B has a diameter twice that of circle A. What is the area of circle B?
Q.3.
A regular octagon has a perimeter of 108 cm. How long are each of its sides?
Q.4.
If the circumference of a circle is 19 cm, what is its radius (assume that π = 3.142 and round your answer to the nearest whole number)?
Q.5.
The area of a square is 64 cm . What is its perimeter?
Q.6.
What is the area of a circle whose radius is 10 cm (assume π = 3.142)?
Q.7.
Jane is tiling her bathroom wall. The area of the wall is 8 m . Each tile has an area of 400 cm . How many tiles will Jane need?
Q.8.
Square A has an area of 13 cm . Square B has sides twice as long as those of square A. What is the area of square B?
Q.9.
If the diameter of a circle is 24 cm, what is its circumference (assume that π = 3.142 and round your answer to the nearest whole number)?
Q.10.
The surface area of a cube is 54 cm . How tall is the cube?