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प्रश्न
In the following figure, find the area of the shaded portions

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उत्तर
Area of EFDC = ar (ABCD) − ar (BCE) − ar (AFE)
= (18 × 10) − `1/2` (10 × 8) − `1/2` (6 × 10)
= 180 − 40 − 30 = 110 cm2
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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.
Find the area of the quadrilateral ABCD.
Here, AC = 22 cm, BM = 3 cm,
DN = 3 cm, and
BM⊥AC, DN⊥AC

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:

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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?
The perimeter of a square plot is 200 m. What is the area of the plot?
