Mensuration Practice Test 3

Radius of the circle = 2πr = 572 m.
r =

572×7

22×2

= 91 m
Length of the floor rectangular auditorium
= 91 + 6 = 97 m.
Perimeter of the floor = 3 (l + b)
= 2 (97 b) = 356 m.
= 194 + 2b = 356
= 2b = 162
b =

162

2

= 81
Area of the rectangular auditorium = l × b
= 97 × 81
= 7,857 m2
Cost of flooring = 7,857 × 12 = Rs 94,284