Page 236 - ICSE Math 8

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9. The area of a trapezium is 240 m and its height is 20 m. Find the length of its parallel sides, if one of
them is thrice the other.
10. A circular garden with diameter 220 m has a circular path of uniform width 7 m inside its boundary.
Find the area of the path.
11. Find the area of the following figures.
(a) 12 cm (b)
8 cm

6 cm 21 cm
16 cm 48 cm
10 cm

15 cm
12. Find the area of the shaded portion for each of the following figures.
(a) (b)

5 cm 6 cm 11 cm 8 cm 12 cm

4 cm 14 cm
14 cm
G
13. Find the area of the hexagon TAGORE, if TO = 9 cm, A
TS = 7 cm, TH = 6 cm, TF = 4 cm, TB = 2 cm,
AB = 3 cm, GH = 5 cm, SR = 2 cm and EF = 4 cm.
T F O
B H S

R
E

THINK SMART

1. What is the area of the largest triangle that can be fitted into a rectangle of length l units and width
w units?
lw lw lw lw
(a) (b) (c) (d)
2 3 6 4
2. Four horses are tethered with equal ropes at 4 corners of a square field of side 70 m so that they just can
reach one another. Find the area left ungrazed by the horses.

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