Advertisements
Advertisements
प्रश्न
Find the area of the shaded portion in a circle whose radius is 7 cm.
उत्तर
Given that ABCD is a square
According to the question,
Area of square ABCD = 4 × Area of a right-angled triangle
∴ Area of square ABCD = 4 × Area of ΔAOB
= `4 xx (1/2 xx AO xx BO)` ......`[∵ "Area of a right angled triangle" = 1/2 xx "Base" xx "Height"]`
= 2 × 7 × 7
= 98 cm2
Hence, the area of inscribed square is 98 cm2.
Area of shaded nortion = Area of circle – Area of square
= πr2 – 98
= `22/7 xx 7 xx 7 - 98`
= 154 – 98
= 56 cm2
APPEARS IN
संबंधित प्रश्न
The length and the breadth of a rectangular piece of land are 500 m and 300 m respectively. Find its area
Find the area of a square park whose perimeter is 320 m.
Find the breadth of a rectangular plot of land, if its area is 440 m2 and the length is 22 m. Also find its perimeter.
Explain how the green area is 4 square cm and the yellow area is 6 square cm.
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.
The area of the smallest stamp is ______ square cm.
The difference between the area of the smallest and the biggest stamp is ______ square cm.
The area of each square on a chess board is 4sqcm. Find the area of the board.
(a) At the beginning of game when all the chess men are put on the board, write area of the squares left unoccupied.
(b) Find the area of the squares occupied by chess men.
Find the area of the square whose sides are:
10 cm
A room is 4 m long and 3 m 50 cm wide. How many square metres of carpet are needed to cover the floor of the room?
Area of the square MNOP of the given figure is 144 cm2. Area of each triangle is ______.
