Selected MCQ

Current Question
A rhombus has an area of 144 sq cm and diagonals in the ratio 1:2. Find the diagonals.
  • A. 24 cm, 48 cm
  • B. 12 cm, 24 cm
  • C. 6√2 cm, 12√2 cm
  • D. 6 cm, 12 cm
Correct Answer: B
Explanation:
Area = (d1 × d2)/2 yields diagonals 12 and 24.
Related Question 1
A rhombus has a side of 26 m and a diagonal of 20 m. Find the area.
  • A. 529 m²
  • B. 240 m²
  • C. 260 m²
  • D. 480 m²
Correct Answer: D
Explanation:
Use the diagonal relation.
Related Question 2
The perimeter of a rhombus is 68 cm, and one diagonal is 16 cm. Find its area.
  • A. 260 cm²
  • B. 240 cm²
  • C. 280 cm²
  • D. 220 cm²
Correct Answer: B
Explanation:
Using the diagonal relation and the area formula (A = ½ d₁d₂) yields 240 cm².
Related Question 3
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 4
Two circles have a radius relation. Area of the square is 196 cm². Find radius.
  • A. 12π
  • B. 16π
  • C. 24π
  • D. 32π
Correct Answer: C
Explanation:
Side=14, radius=7×? → area relation.
Related Question 5
A wire bent into a square encloses 484 cm². If reshaped, find a new area.
  • A. 484 cm²
  • B. 538 2/7 cm²
  • C. 616 cm²
  • D. 644 cm²
Correct Answer: C
Explanation:
Perimeter conserved.