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A triangle has an area of 90 sq cm and a height of 9 cm.
If its height is increased by 4 cm while the base stays the same, by how much (in sq cm) does the area increase?

Class 7Area of TrianglesPerimeter and Area
  • A80
  • B36
  • C44
  • D40

Step-by-Step Solution

From base 9, base = 20 cm. Increase in area = base (increase in height) = sq cm.
Answer: D) 40

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