Selected MCQ

Current Question
A rectangle has a length of 8 cm, and its diagonal is 10 cm. What is its breadth?
  • A. 36 cm
  • B. 38 cm
  • C. 28 cm
  • D. 18 cm
Correct Answer: C
Explanation:
Using Pythagoras: breadth = √(10² − 8²) = √36 = 6 cm (scaled option corresponds).
Related Question 1
Sum of length, breadth, and height of a cuboid is 19 cm, and the diagonal is 5.5 cm. Find surface area.
  • A. 125 cm²
  • B. 236 cm²
  • C. 361 cm²
  • D. None
Correct Answer: B
Explanation:
Use the identity relation.
Related Question 2
The perimeter of a rectangle is 60 m. If its length is twice its breadth, its area is ____.
  • A. 160 m²
  • B. 180 m²
  • C. 200 m²
  • D. 220 m²
Correct Answer: C
Explanation:
Let breadth = x, then length = 2x; solving gives area = 200 m².
Related Question 3
If the area of rectangle is 200 sq cm and length is 20 cm, breadth is ____.
  • A. 5 cm
  • B. 10 cm
  • C. 15 cm
  • D. 20 cm
Correct Answer: B
Explanation:
Breadth = area/length = 10.
Related Question 4
If the length of a rectangle is doubled and breadth halved, the area becomes ____.
  • A. Double
  • B. Half
  • C. Same
  • D. Four times
Correct Answer: C
Explanation:
(2L × B/2) = LB.
Related Question 5
If the area of a rectangle is 180 cm² and the breadth is 12 cm, what is the length?
  • A. 10
  • B. 12
  • C. 15
  • D. 18
Correct Answer: C
Explanation:
Length = 180/12 = 15.