A carpet of size 5 m × 2 m has 25 cm wide red border. The inner part of the carpet is blue in color (Fig. 9.56). Find the area of blue portion. What is the ratio of areas of red portion to blue portion?

How much distance, in metres, a wheel of 25 cm radius will cover if it rotates 350 times?

A circular pond is surrounded by a 2 m wide circular path. If outer circumference of circular path is 44 m, find the inner circumference of the circular path. Also find area of the path.

Use the Fig. 9.57 showing the layout of a farm house:

A. What is the area of land used to grow hay?

B. It costs ₹ 91 per m2 to fertilise the vegetable garden. What is the total cost?

C. A fence is to be enclosed around the house. The dimensions of the house are 18.7 m × 12.6 m. At least how many metres of fencing are needed?

D. Each banana tree required 1.25 m2 of ground space. How many banana trees can there be in the orchard?

Study the layout given below in Fig. 9.58 and answer the questions:

A. Write an expression for the total area covered by both the bedrooms and the kitchen.

B. Write an expression to calculate the perimeter of the living room.

C. If the cost of carpeting is ₹ 50/m², write an expression for calculating the total cost of carpeting both the bedrooms and the living room.

D. If the cost of tiling is ₹ 30/m², write an expression for calculating the total cost of floor tiles used for the bathroom and kitchen floors.

E. If the floor area of each bedroom is 35 m², then find x.