A rectangular metal plate is 7 cm long and 5 cm wide. Find the cost of the plate at the rate of Rs 75 per sq cm.

5

(a)

How many envelopes can be made out of a sheet of paper 324 cm by 172 cm, if each envelope requires a piece of paper of size 18 cm by 12 cm.

5

(a)

A hedge boundary needs to be planted around a rectangular lawn of size 72 m x 18 m. If 3 shrubs can be planted in a metre of hedge, how many shrubs will be planted in all?

5

(a)

A wall of a room is of dimensions 5 m x 4m. lt has a window of dimensions 1.5 m x 1 m and a door of dimensions 2.25 m x 1 m. Find the area of the wall, which is to be painted.

5

(a)

Find the ratio of areas of  \(\Delta\)MNO, \(\Delta\)MOP and \(\Delta\)MPQ in the following figure

5

(a)

(a) Taj Mahal stands on a square platform that is 95.40 m on each side. What is the area of this square platform in square metres?
(b) The floor area of the main building is 3214 m². What is the area of the part of the platform that is not covered by the main building?

5

(a)

A copper wire, when bent in the form of a square encloses an area of 121 cm² . If the same wire is bent in the form of a circle, find the area enclosed by it.

5

(a)

The floor of a building is covered with 2760 tiles. Each of the tiles is in the shape of a parallelogram of altitude 3 em and base 4.5 cm. Find the cost of polishing the tiles at the rate of Rs 20 per m².

5

(a)

Find the height of the wall whose length is 4 m and which can be covered by 2400 tiles of size 25 cm by 20cm.

5

(a)

The side of a square is 40 cm and the breadth of a rectangle is 20 cm. If their areas are equal. then find the perimeter of the rectangle.

5

(a)