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प्रश्न
In the following figure, find the area of the shaded portions
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उत्तर
ar (QTU) = ar (PQRS) − ar (TSU) − ar (RUQ) − ar (PQT)
= (20 × 20) − `1/2` (10 × 10) − `1/2` (20 × 10) − `1/2` (20 × 10)
= 400 − 50 − 100 − 100 = 150 cm2
संबंधित प्रश्न
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
Through a rectangular field of length 90 m and breadth 60 m, two roads are constructed which are parallel to the sides and cut each other at right angles through the centre of the fields. If the width of each road is 3 m, find
1)the area covered by the roads.
2) the cost of constructing the roads at the rate of Rs 110 per m2.
The adjoining figure represents a rectangular lawn with a circular flower bed in the
middle. Find:
1) the area of the whole land
2) the area of the flower bed
3) the area of the lawn excluding the area of the flower bed
4) the circumference of the flower bed.
A rectangular park is 45 m long and 30 m wide. A path 2.5 m wide is constructed outside the park. Find the area of the path.
A path 5 m wide runs along inside a square park of side 100 m. Find the area of the path. Also, find the cost of cementing it at the rate of Rs. 250 per 10 m2.
Find the area enclosed by the following figure:
Find the area enclosed by the following figure:
Find the area enclosed by the following figure:
If the area of a rectangle is 45 cm² and its breadth is 10 cm, what is the length of the rectangle?
The perimeter of a square field is 112 m. What is the area of the square field?
