Selected MCQ

Current Question
A rectangular field is fenced on three sides, leaving one side of 20 ft open. If the area is 680 sq ft, what is the length of the fence?
  • A. 34 ft
  • B. 40 ft
  • C. 68 ft
  • D. 88 ft
Correct Answer: D
Explanation:
Solve dimensions and add three sides.
Related Question 1
Three cubes of sides 9, 12, and 15 cm are melted to form a new cube. Find its side.
  • A. 21 cm
  • B. 19 cm
  • C. 32 cm
  • D. 18 cm
Correct Answer: D
Explanation:
Total volume = cube of new side.
Related Question 2
A rectangular field has one side 4 m and a diagonal of 5 m. What is an area?
  • A. 12 sq m
  • B. 4√14 sq m
  • C. 20 sq m
  • D. 15 sq m
Correct Answer: A
Explanation:
Other side = 3 → area = 12.
Related Question 3
A rectangular field has a diagonal length. Find the side length.
  • A. 15.16 cm
  • B. 16.17 cm
  • C. 17.18 cm
  • D. 18.19 cm
Correct Answer: C
Explanation:
Use Pythagoras theorem.
Related Question 4
The product of the areas of three adjacent faces of a rectangular box is equal to ____.
  • A. Volume of the box
  • B. Twice the volume
  • C. Square of the volume
  • D. Cube root of the volume
Correct Answer: C
Explanation:
Product of face areas = (l×b)(b×h)(h×l) = (lbh)².
Related Question 5
The perimeters of two squares are 48 cm and 20 cm. Find the difference in their sides.
  • A. 15√2 cm
  • B. 13√2 cm
  • C. 16√2 cm
  • D. 17√2 cm
Correct Answer: B
Explanation:
Side = perimeter/4; difference leads to 13√2 cm.