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If perimeter is 12cm and hypoteneus is 5cm find area of right triangle?
Wiki User
∙ 14y ago
An angle cannot have an area.
It is possible, however, that the question is about a right angled triangle.
Suppose the lengths of the two legs are x cm and y cm
by Pythagoras, x2 + y2 = 52 = 25
and perimeter = 12 => x + y + 5 = 12 => x + y = 7
So (x + y)2 = 49
ie x2 + 2xy + y2 = 49
But x2 + y2 = 25
so 2xy = 49 - 25 = 24
So area of triangle = 0.5*xy = 24/4 = 6 sq cm
Wiki User
∙ 14y ago
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