Selected MCQ

Current Question
Total cost of flooring a room at Rs. 8.50 per m² is Rs. 510. Find the area.
  • A. 7.5 m²
  • B. 8.5 m²
  • C. 10.5 m²
  • D. 12.5 m²
Correct Answer: A
Explanation:
Area = cost/rate = 510/8.5.
Related Question 1
Total area of 64 squares is 400 cm². Find the side of the big square.
  • A. 17 cm
  • B. 20 cm
  • C. 23 cm
  • D. 26 cm
Correct Answer: D
Explanation:
Total side calculation.
Related Question 2
A cylinder has a radius of 7 cm and a height of 3 cm. Find the total surface area.
  • A. 308 cm²
  • B. 220 cm²
  • C. 440 cm²
  • D. 132 cm²
Correct Answer: C
Explanation:
TSA = 2πr(r+h).
Related Question 3
A room is 15 m long, 4 m wide, and 3 m high. Find the cost of whitewashing its walls at 50 paise per m².
  • A. Rs. 60
  • B. Rs. 57
  • C. Rs. 55
  • D. Rs. 52
Correct Answer: B
Explanation:
Area of four walls × rate.
Related Question 4
A rectangular grass field 75 m × 55 m has a path of width 2.5 m all around. Find the area and cost.
  • A. 675, Rs. 1350
  • B. 575, Rs. 1350
  • C. 1350, Rs. 675
  • D. None
Correct Answer: A
Explanation:
Path area computed from outer minus inner rectangle.
Related Question 5
A shopkeeper sells goods worth Rs. 25000 at 20% profit and the rest at 10% loss. Find the total cost price.
  • A. Rs. 25000
  • B. Rs. 20000
  • C. Rs. 15000
  • D. Rs. 22000
Correct Answer: B
Explanation:
Net adjustment gives a total CP of Rs. 20000.