Mathematics for IGCSE & O level - Mensuration (Section 7 - No. 43)
If you double the base of a triangle and keep the height the same, how does the area change?
The area halves.
The area doubles.
The area stays the same.
The area is multiplied by four.
Explanation
Area = 0.5 * base * height. Doubling the base doubles the area.
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