Test for Heron’s Formula
Total Time : 45 minutes
Total marks: 27 marks
1. Find the area of a triangle whose sides are 3 cm, 4 cm and 5 cm. (2)
2. The area of an equilateral triangle whose side is �a� cm is
Find its height. (2)
3. Find the length of a diagonal of a square whose side is 2 cm. (2)
4. The diagonal of a square is
What is the side? (2)
5. The length of a rectangular plot of land is twice its breadth. If the perimeter of the plot be 180 metres, then find its area. (3)
6. The lengths of sides of a triangle are in the ratio 3 : 4 : 5 and its perimeter is 120 cm, find its area. (3)
7. Find the area of a quadrilateral ABCD in which AB = 8 cm, BC = 6 cm, CD = 8 cm, DA = 10 cm and AC = 10 cm. (3)
8. The sides of a triangle are 5 cm, 12 cm and 13 cm. What is its area? (2)
9. What is the area of the given ΔABC? (2)
10. The sides of a triangle are in the ratio of 3 : 4 : 5 and its perimeter is 510 m. What is the measure of its greatest side? (3)
11. The perimeter of a right triangle is 30 cm. If its hypotenuse is 13 cm, then what are two sides? (3)