Advertisements
Advertisements
प्रश्न
A door of length 2 m and breadth 1 m is fitted in a wall. The length of the wall is 4.5 m and the breadth is 3.6 m (see the given figure). Find the cost of white washing the wall, if the rate of white washing the wall is Rs 20 per m2
Advertisements
उत्तर
Door area = length × width
= 2 × 1 = 2 sqm Area of wall including doors = 4.5 × 3.6 =16.20 sqm
Hence, area of the wall only =16.20 - 2 = 14.20 sqm
Cost of whitewashing 1 sqm = Rs.20
cost of whitewashing 14.20 sq.m = 14.20 x 20 = Rs.284, so the cost of whitewashing is Rs. 284
संबंधित प्रश्न
The length of the side of the square is given below. Find its area.
25 metres
The picture alongside shows some squares. Find out how many squares with the same measures will fit in the empty space in the figure.
Look at these interesting stamps.
Which stamp has the biggest area? How many squares of side 1 cm does this stamp cover? How much is the area of the biggest stamp? square cm.
Look at these interesting stamps.
Which two stamps have the same area? How much is the area of each of these stamps? square cm.
The side of a square is 5 cm. How many times does the area increase, if the side of the square is doubled?
Amita wants to make rectangular cards measuring 8 cm × 5 cm. She has a square chart paper of side 60 cm. How many complete cards can she make from this chart? What area of the chart paper will be left?
12 m2 is the area of ______.
Area of a square of side 6 m is equal to the area of ______ squares of each side 1 cm.
Study the layout given in the following figure and answer the questions:
- Write an expression for the total area covered by both the bedrooms and the kitchen.
- Write an expression to calculate the perimeter of the living room.
- 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.
- 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.
- If the floor area of each bedroom is 35 m2, then find x.
Calculate the area of shaded region in the following figure, where all of the short line segments are at right angles to each other and 1 cm long.
