Question

Exercise 15.3
In a rectangular garden of 100 m long and 75 m broad a walkway of 5 m wide is built inside the
garden. Find the area of the walkway,
Ta a rectangular wooden frame of length 20 cm and breadth 12 cm, a rectangular picture 16 cm
long and 8 cm wide is fixed exactly at the centre. Find the area of the margin.
A chart paper measures 4 mx 3 m. A strip of 1 m wide is cut out from all around. Find the area
of the remaining chart paper and the area of cut out strip.
A balcony of width 3 m is constructed all along outside a rectangular room which is 14 m
long
and 9 m wide. Find the area of balcony. If the cost of cementing the floor of balcony is
35 per m². Find the cost of flooring are the balcony.
Two crossroads, each of width 15 m constructed at right-angles through the centre of a
rectangular garden of length 500 m and breadth 200 m are parallel to its sides. Find the area
the roads.
Find the area of the shaded region of the following figures.
b)
45 m​

Answer 1

Step-by-step explanation:

Exercise 15.3

In a rectangular garden of 100 m long and 75 m broad a walkway of 5 m wide is built inside the

garden. Find the area of the walkway,

Ta a rectangular wooden frame of length 20 cm and breadth 12 cm, a rectangular picture 16 cm

long and 8 cm wide is fixed exactly at the centre. Find the area of the margin.

A chart paper measures 4 mx 3 m. A strip of 1 m wide is cut out from all around. Find the area

of the remaining chart paper and the area of cut out strip.

A balcony of width 3 m is constructed all along outside a rectangular room which is 14 m

long

and 9 m wide. Find the area of balcony. If the cost of cementing the floor of balcony is

35 per m². Find the cost of flooring are the balcony.

Two crossroads, each of width 15 m constructed at right-angles through the centre of a

rectangular garden of length 500 m and breadth 200 m are parallel to its sides. Find the area

the roads.

Find the area of the shaded region of the following figures.

b)

45 m