Question

?
Base
х
5
8
2x
14
Area
?
?
1. Copy and complete the table for a triangle.
?
6
16
11
5
Height 10
?
20
110
50
120
?
?
2. Find the area, in square metres, of the triangle, whose base and altitude are as under:
(i) base = 7.5 cm, altitude = 4 cm
(ii) base = 1.5 m, altitude = 0.8 m
3. Find the area of each of the following figures:
13
6
4
5
5
9
3
1.5
3
9
9
6
(iii)
Find the area of an isosceles right triangle if one of the right sides is 20 cm long.
[Hint. In the isos. A, base = altitude = 20 cm]
Find the base of the triangle if, area is 16 hectares and height is 40 dam.​

Answer 1

Answer:

ans for question 2

1 .1/2 x 7.5 x 4 = 15sq cm = 0.15 aq m

2. 1/2 x 1.5 x 0.8 = 0.60 sq. cm = 0.0060 sq m