If base increases by 25% and height decreases by 20%, area becomes?
- 1.25 times
- Same
- Double
- None of these
Explanation
Area of a triangle = 1/2 _ base _ height
Let old base = B, old height = H.
Old area = 1/2 _ B _ H
New base = B + 25% of B = B + 0.25B = 1.25B
New height = H - 20% of H = H - 0.20H = 0.80H
New area = 1/2 _ 1.25B _ 0.80H
= 1/2 _ 1.00 _ B _ H
= 1/2 _ B * H
New area = old area. It stays the same.
Last verified on 25-05-2026
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