Advertisements
Advertisements
प्रश्न
Find the area enclosed by the following figure:
Advertisements
उत्तर
The given shape contains a semi-circle and a triangle.
Area of semi-circle
= `1/2 πr^2`
= `1/2 xx 22/7 xx 10 xx 10`
= `1100/7`cm2
Area of triangle
= `1/2` × Base × Height
= `1/2 xx 20 xx 7`
= 70 cm2
Hence, total area enclosed by the shape
= `1100/7 + 70`
= `(1100 + 490)/7`
= `1590/7`
= 227 cm2 (approx)
APPEARS IN
संबंधित प्रश्न
A 3 m wide path runs outside and around a rectangular park of length 125 m and breadth 65 m. Find the area of the path.
A verandah of width 2.25 m is constructed all along outside a room which is 5.5 m long and 4 m wide. Find:
1) the area of the verandah
2) the cost of cementing the floor of the verandah at the rate of Rs 200 per m2.
A path 1 m wide is built along the border and inside a square garden of side 30 m. Find:
1) the area of the path
2) the cost of planting grass in the remaining portion of the garden at the rate of Rs 40 per m2
Pragya wrapped a cord around a circular pipe of radius 4 cm (adjoining figure) and cut off the length required of the cord. Then she wrapped it around a square box of side 4 cm (also shown). Did she have any cord left? (π= 3.14)
In the following figure, find the area of the shaded portions
Two crossroads, each of width 5 m, run at right angles through the center of a rectangular park of length 70 m and breadth 45 m and parallel to its sides. Find the area of the roads. Also, find the cost of constructing the roads at a rate of Rs. 105 per m2.
Find the area enclosed by the following figure:
Find the area enclosed by the following figure:
A floor is 5 m long and 4 m wide. A square carpet with sides of 3 m is laid on the floor. What is the area of the floor that is not carpeted?
The cost of flooring a room at ₹68 per square meter is ₹2040. If the length of the room is 7.5 m, what is the breadth?
