Question

x
m2
Area of each flower bed (sector) =
1
1
22 7 7 154
x 2
4 7 2 2
16
Area of 4 flower beds = 4 x
154
154
m2 = 38.5 m2
16
4.
Area of the remaining park = 625 m2 - 38.5 m2 = 586.5 m².
m2
Exercise 9.1
1. In exchange for a square plot of land one of whose sides is 84 m, a man wants to buy a rectangular plot 14
long and of the same area as the square plot. Determine the width of the rectangular plot.
2. The dimensions of the floor of a rectangular hall are 4 m * 3 m. The floor of the hall is to be tiled fully
8 cm x 6 cm rectangular tiles without breaking tiles to smaller tiles. Find the number of required tiles.
3. In given figure, ABCD is a rectangle. The radius of the semicircles drawn on AD and D
BC as diameters and radius of circle drawn in between is the same. If BC = 7 cm,
find the area of the shaded region.
4. A table cover 4 mx 2 m is spread on a table. Find the cost of polishing the top of A
the table at 2.25 per sq. m, if 25 cm table cover is hanging all round the table.
5. The length of a square is increased by 40% while breadth is decreased by 40%. Find the ratio of the area
resulting rectangle so formed to that of the original square.
6. A paper is in the form of a square of side 20 m. Semicircles are drawn inside the
square paper on two sides as diameter. The semicircular portions are cut off (see
adjoining figure). Find the area of remaining paper. (Use 1 = 3.14)
M
D​

Answer 1

Answer:

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