Advertisements
Advertisements
प्रश्न
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.
Advertisements
उत्तर
Length of the larger rectangle = 1 × 9 cm = 9 cm
Breadth of the larger rectangle = 1 × 9 cm = 9 cm
∴ Area of shaded region = Area of larger square – Area of 41 small identical square
= 9 × 9 – 41 × 1 × 1
= 81 – 41
= 40 cm2
APPEARS IN
संबंधित 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
The length of the side of the square is given below. Find its area.
6 cm
The table given below contains some measures of the square. Find the unknown values.
| Side | Perimeter | Area |
| ? | ? | 49 sq.feet |
Look at these interesting stamps.
The area of the smallest stamp is ______ square cm.
The difference between the area of the smallest and the biggest stamp is ______ square cm.
Find the area of the square whose sides are:
10 cm
Find the area of the square whose sides are:
5 m
Five square flower beds each side 1 m are dug on a piece of land 5 m long and 4 m wide. What is the area of the remaining part of the land?
Rani bought a new field that is next to one she already owns in the given figure. This field is in the shape of a square of side 70 m. She makes a semi-circular lawn of maximum area in this field. Find the area of the square field excluding the lawn.
Find the area of the shaded portion in a circle whose radius is 7 cm (see figure).
[Hint: Four right-angled triangles joined at right angles to form a square]
Architects design many types of buildings. They draw plans for houses, such as the plan shown in the following figure:
An architect wants to install a decorative moulding around the ceilings in all the rooms. The decorative moulding costs ₹ 500/metre.
- Find how much moulding will be needed for each room.
(i) family room
(ii) living room
(iii) dining room
(iv) bedroom 1
(v) bedroom 2 - The carpet costs ₹ 200/m2. Find the cost of carpeting each room.
- What is the total cost of moulding for all the five rooms.
