Question

6. Find the area of right-angle triangle whose base is 2.4 m and hypotenuse 2.5 m.
7. The sides of a triangle are in the ratio 7: 8:9 and its perimeter is 168 m. Find the area of the triangle.
8. The sides of a triangular park are 42 m, 34 m and 24 m. Find the cost of turfing the park at ₹15 per sq. meter.
9. The base and altitude of a right triangle are in the ratio 3 : 4 and its area is 3174 square metre. Find the hypotenous of the triangle.
10. The area of a rhombus is 192 cm square and one of its diagonals is 12 cm. Find the perimeter of the rhombus.
11. Two diagonals of a rhombus are 18 cm and 16 cm. Find the cost of laveling it at ₹3.50 per sq.cm.
12. The lengths of the two parallel sides of a trapezium are 28 cm and 18 cm. If the distance
between them is 8 cm, find the area of the trapezium.
13. The non-parallel sides of a trapezium are 25 cm and 30 cm. If the parallel sides of the
trapezium are 52 cm and 27 cm then find the area of the trapezium. Please solve all the question in copy with the formula..​

Answer 1

area of Δ =$0.84cm^{2}$

see the pic that i have attached

hope this helps...