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Answer:
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)√11,449=107.
2)√14,161=119