Page 2 - HA6

Answers:

1)

2
Area of the roads = Area of ABCD + Area of EFGH – Area of IJKL = 9900 m
Area of the park excluding roads = Area of park – Area of the roads

= 200100 m 2 = 200100 = 20.01 hectare
10000
2) The area of margin = Area of the cardboard when margin is including – Area of
the

cardboard when margin is not including = 30 cm 2
3) So, the length of cord left with Pragya = Perimeter of circular pipe – Perimeter of
square

= 9.12 cm
Yes, 9.12 cm cord is left.

4) Area of ΔQTU = PQRS area – (ΔSTU + ΔTPQ + ΔQRU) = 150 cm 2

2
5)Area of quadrilateral ABCD = Area of ΔABC + Area of ΔADC = 66 cm