Page 211 - Start Up Mathematics_6

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7. In the given figure, all triangles are equilateral and 4
AB = 8 units. Other triangles have been formed by taking
the midpoints of the sides. What is the perimeter of
the figure? B C

8. In an exhibition hall, there are 24 display boards each of length 1 m 50 cm and breadth
1 m. There is a 100 m long aluminium strip, which is used to frame these boards. How many
boards will be framed using this strip? Find also the length of the aluminium strip required
for the remaining boards.
200 m 300 m

9. What is the length of outer boundary of the park shown in the
figure? What will be the total cost of fencing it at the rate of 260 m 80 m 80 m
` 20 per metre? There is a rectangular flower bed in the center 100 m
of the park. Find the cost of manuring the flower bed at the
rate of ` 50 per square metere. 200 m 300 m

10. A magazine charges ` 300 per 10 sq. cm area for advertising. A company decided to order a
half page advertisement. If each page of the magazine is 15 cm × 24 cm, what amount will
the company has to pay for it?

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