Selected MCQ

Current Question
A tower of height 15 m makes an angle of elevation 60°. Find the distance from the base.
  • A. 5 m
  • B. 8 m
  • C. 10 m
  • D. 12 m
Correct Answer: C
Explanation:
tan60 = h/d → d = 15/√3 = 10 m.
Related Question 1
The area of a triangle with base 10 cm and height 6 cm is ____.
  • A. 20
  • B. 25
  • C. 30
  • D. 35
Correct Answer: C
Explanation:
Area = ½ × 10 × 6 = 30.
Related Question 2
The area of a square with side x equals the area of a triangle with base x. What is the height of the triangle?
  • A. x/2
  • B. x
  • C. 2x
  • D. 4x
Correct Answer: C
Explanation:
Equating areas: x² = ½ × x × h ⇒ h = 2x.
Related Question 3
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 4
The speed of the boat in still water is 5 km/h. It travels upstream and downstream the same distance. Find stream speed.
  • A. 5 km/h
  • B. 8 km/h
  • C. 10 km/h
  • D. 15 km/h
Correct Answer: A
Explanation:
Equal time implies that stream speed equals still-water speed.
Related Question 5
The slant height of a cone is 12 cm, and the radius is 4 cm. Find the curved surface area.
  • A. 74π cm²
  • B. 36π cm²
  • C. 48π cm²
  • D. 24π cm²
Correct Answer: C
Explanation:
CSA = πrl = π×4×12.