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General

Easy

Question

# Find the area of largest triangle that can be inscribed in a semi-circle of radius 9 cm.

Hint:

## The correct answer is: 81 cm2

### It is given that radius of the circle = 9 cm

⇒ Diameter = 2 r = 2 9 = 18 cm

As we can see in the picture

Base of the triangle = diameter = 18 cm

Height of the triangle = radius = 9 cm

Area of the triangle =

=

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