Mathematics
NULL
Medium
Question
The area of a rectangle is thrice that of a square. The length of the rectangle is 40 cm and the breadth of the rectangle is (3/2) times the side of the square. The side of the square (in cm) is __________?
A
15
B
20
✓ Official correct answer
C
30
D
60
Community credibility
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A
15
No member explanations yet for this option.
B
20
No member explanations yet for this option.
C
30
No member explanations yet for this option.
D
60
No member explanations yet for this option.
Explanation
40 × (3/2)s = 3s² ⇒ 60s = 3s² ⇒ s = 20.