Maths-
General
Easy

Question

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

hintHint:


The correct answer is: 81 cm2


    It is given that radius of the circle = 9 cm
    ⇒ Diameter = 2 cross times r = 2 cross times 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 = 1 half cross times b cross times h
    1 half cross times 18 cross times 9 equals 81 cm squared

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