Question

if the base of the right angle triangle is 8 centimetre and 17 cm find its area​

Answer 1

Let a = 8cm, b = 15cm, c = 17cm 

s = (a + b + c)/2 = (8 + 15/ + 17)/2 = 40/2 = 20cm 

∴  Area = root under √s(s - a)(s - b)(s - c)

= root under √20(20 - 8)(20 - 15)(20 - 17)

= root under √20 x 12 x 5 x 3 = 60 cm2

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