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Find the area of a right-angled triangle whose base is 12 cm and hypotenuse is 13 cm.

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Find the area of a right-angled triangle whose base is 12 cm and hypotenuse is 13 cm.

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Height of the triangle = [(13)2 - (12)2 ](1/2) cm = (25)(1/2) cm = 5 cm. 

Its area = (1/2)* Base * Height = ((1/2)*12 * 5) cm2 = 30 cm2.

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