Advertisements
Advertisements
प्रश्न
Find the area enclosed by the following figure:
उत्तर
The given shape contains a rectangle and a triangle.
For rectangle, l = 15 m and b = 3 cm
∴ Area of rectangle = l × b = 15 × 3 = 45 cm2
According to the figure,
BE = AB – AE = 15 – 10 = 5 cm
For triangle, base (b) = BE = 5 cm and height (h) = 4 cm
∴ Area of ΔBEG = `1/2` × b × h = `1/2` × 5 × 4 = 10 cm2
∴ Total area enclosed by the shape = (45 + 10) cm2 = 55 cm2.
APPEARS IN
संबंधित प्रश्न
A picture is painted on a cardboard 8 cm long and 5 cm wide such that there is a margin of 1.5 cm along each of its sides. Find the total area of the margin.
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
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.
In the following figure, find the area of the shaded portions
Find the area of the quadrilateral ABCD.
Here, AC = 22 cm, BM = 3 cm,
DN = 3 cm, and
BM⊥AC, DN⊥AC
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.
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: