If a triangle with base 8 cm has the same area as a circle

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If a triangle with base 8 cm has the same area as a circle with radius 8 cm, then the corresponding altitude (in cm) of the triangle is

Using Rule 1 and 14,
Let the corresponding altitude of the triangle = x cm.
According to the question, Area of the triangle = Area of the circle

⇒	1	x × 8 = π × 8 × 8
	2

⇒ x = 2 × 8 π = 16π cm.