Question

4h
120
= 30
[Dividing both side
4 4
Hence, the height of the wall is 30 metres.
EXERCISE 20.1
1. Find the area, in square metres, of a rectangle whose
(i) Length = 5.5 m, breadth = 2.4 m (ii) Length = 180 cm, breadth = 150 cm
2. Find the area, in square centimetres, of a square whose side is
(i) 2.6 cm (ii) 1.2 dm
3. Find in square metres, the area of a square of side 16.5 dam.
Find the area of a rectangular field in ares whose sides are:
(i) 200 m and 125 m (ii) 75 m 5 dm and 120 m
Find the area of a rectangular field in hectares whose sides are:
(i) 125 m and 400 m
(ii) 75 m 5 dm and 120 m
A door of dimensions 3 m x 2m is on the wall of dimension 10 m x 10 m. Find the

the wall if rate of painting is 2.50 per sq. m.
A wire is in the shape of a rectangle. Its length is 40 cm and breadth is 22 cm. If the san
is bent in the shape of a square, what will be the measure of each side. Also, find which
encloses more area?
are metres of glass will be required for a window which has 12 panes​

Answer 1

Answer:

sorry friend iam not known answer

Answer 2

Answer:

yetna lamba question