alleryKabir's square card has a perimeter of 40 cm. What is its area?
A140 square cm
B100 square cm
C160 square cm
D120 square cm
Answer & Solution
Correct answer: B. 100 square cm
1. A square of perimeter 40 cm has a side of 40 divided by 4, that is 10 cm.
2. Area of a square is side times side.
3. So the area is 10 times 10, which is 100 square cm.
_Source: syllabus Mathematics, 'Math-Magic', Ch 11 'Area and its Boundary'_
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