Question

square of side but
that the area of the triangle ADE is one-third
of the area of the square. Find the length
of ED
17.12. Find the area
I to that of a rectangle
his field is sold at the rate
an
perimeter of a triangle is 540 m and its sides are in the ratio 25:17 12 Find the
of the triangle.
7. In a A ABC, AB = AC = 4 cm and ZA = 90°. Calculate the area of A ABC
8. Find the area of the equilateral triangle whose each side is : (1) 12 cm, n) 5 cm
Find the area of a triangle with base 5 cm and whose height is equal to that of
with base 5 cm and area 20 cm.
10. The sides of a triangular field are 975 m, 1050 m and 125 m. If this field is so
of 1000 per hectare, find its selling price.
11. The base of an isosceles triangle is 24 cm and its area is 192 sq. cm. Find its
12. The area of an equilateral triangle is 173.2 ms. Find its perimeter.
13. Find the area of the isosceles triangle whose :
(i) each of equal sides is 8 cm and the base is 9 cm.
(ii) each of the equal sides is 10 cm and the base is 12 cm.
(iii) each of the equal sides is 7.4 cm and the base is 6.2 cm.
(iv) perimeter is 11 cm and base is 4 cm.
14. The lengths of the sides of a triangle are 42 cm, 34 cm and 20 cm. Calculate its area a
the length of the altitude on the longest side.
15. One side of a right-angled triangular scarf is 80 cm and its longest side is 1 m. Find
cost at the rate of 0.25 per square centimetre.
I ANSWERS​

Answer 1

Answer:

square of side but that the area of the triangle a d is one third of the area of the square find the length of ID 17.12 find the area I to that the of the triangle is feel is sold at the rate of an perimeter of a triangle is 540 metre and its sides are are and its in the ratio 25 is to 17 is 212