Area MCQs

A rectangular plank $$\sqrt 2 $$ metre wide is placed symmetrically on the diagonal of a square of side 8 metres as shown in the figure. The area of the plank is :

The area of a triangle whose sides are of lengths 3 cm, 4 cm and 5 cm is :

The perimeter of a triangle is 30 cm and its area is 30 cm2. If the largest side measures 13 cm, then what is the length of the smallest side of the triangle ?

If a parallelogram with area P, a rectangle with area R and a triangle with area T are all constructed on the same base and all have the same altitude, then which of the following statements is false ?

The circumferences of two circle are 132 metres and 176 metres respectively. What is the difference between the area of the larger circle and the smaller circle ?

The ratio of the radii of two circles is 1 : 3. Then the ratio of their areas is :

The circumference of a circular ground is 88 metres. A strip of land, 3 metres wide, inside and along the circumference of the ground is to be levelled. What is the budgeted expenditure if the levelling costs Rs. 7 per square metre ?

If the circumference of a circle is 100 units, then what will be the length of the arc described by an angle of 20 degrees ?

If in a triangle, the area is numerically equal to the perimeter, then the radius of the inscribed circle of the triangle is :