Ramesh grew wheat in a rectangular field that measured 32 metres long and 26 metres wide. This year he increased the area for wheat by increasing the length but not the width. He increased the area of the wheat field by 650 square metres. What is the length of the expanded wheat field?

In Fig. 9.65, triangle AEC is right-angled at E, B is a point on EC, BD is the altitude of triangle ABC, AC = 25 cm, BC = 7 cm and AE = 15 cm. Find the area of triangle ABC and the length of DB.

Calculate the area of shaded region in Fig. 9.66, where all of the short line segments are at right angles to each other and 1 cm long.

The plan and measurement for a house are given in Fig. 9.67. The house is surrounded by a path 1m wide.

Find the following:

(i) Cost of paving the path with bricks at rate of ₹ 120 per m².

(ii) Cost of wooden flooring inside the house except the bathroom at the cost of ₹ 1200 per m².

(iii) Area of Living Room.