A triangular park ABC has sides 120 m, 80 m and 50 m (see fig
). A gardener Dhania has to put a fence all around it and also plant grass inside. How much area does she need to plant ?

The triangular side walls of a flyover have been used for advertisements. The sides of the walls are 122 m, 22 m and 120 m (see Fig. 12.9). The advertisements yield an earning of ₹ 5000 per m^2 per year. A company hired one of its walls for 3 months. How much rent did it pay?

This is a figure of a rectangular park (see figure) whose length is 30m and width is 20m. There is a path of one metre width running inside along the perimeter of the park that has to be cemented. If 1 bag of cement is required to cement 4m^2 area, how many bags of cement would be required to construct the cemented path?

Sanya has a piece of land which is in the shape of a rhombus (See Fig. ). She wants her one daughter and one son to work on the land and produce different crops to suffice the needs of their family. She divided the land in two parts by joining its opposite comers. If the perimeter of the land is 400 m and one of the diagonals is 160 m, how much area each of them will get to work on.

A path 1 m wide is built along the border and inside a square garden of side 30 m. Find: (i) the area of the path (ii) the cost of planting grass in the remaining portion of the garden at the rate of Rs. 40 per m^2 .

A park, in the shape of a quadrilateral ABCD, has /_C = 90^@ , AB = 9m, BC = 12m, CD =5m and AD = 8m . How much area does it occupy ?

This is a figure of a rectangular park (see figure) whose length is 30m and width is 20m. There are two rectangular flower beds of size 1.5 xx 2 m each in the park as shown in the diagram and the rest has grass on it. Find the area covered by a grass.