Area MCQs

Two equal circle are drawn in square in such a way that a side of the square forms diameter of each circle. If the remaining area of the square is 42 cm2, how much will the diameter of the circle measure ?

The base of triangle is 15 cm and height is 12 cm the height of another triangle of double the area having base 20 cm is :

The difference between the length and breadth of a rectangle is 23 m. If its perimeter is 206 m, then its area is :

The length of a rectangle is three times of its width. If the length of the diagonal is $$8\sqrt {10} $$ cm, then the perimeter of the rectangle is :

A typist uses a paper 30 cm by 15 cm. He leaves a margin of 2.5 cm at the top and bottom and 1.25 cm on either side. What percentage of paper area is approximately available for typing ?

The adjoining figure contains three squares with areas of 100, 16 and 49 lying side by side as shown. By how much should the area of the middle square be reduced in order that the total length PQ of the resulting three squares is 19 ?

The three sides of a triangular field are 20 metres, 21 metres and 29 metres long respectively. The area of the field is :

The diagonal of a square is $$4\sqrt 2 $$ cm. The diagonal of another square whose area is double that of the first square, is :

What will be the area of 4 metres high wall on all four sides of a rectangular hall having perimeter 64 m ?