Question

Find the area of a triangle whose sides are 20cm,21cm, and 13cm.Find the length of the altitude corresponding to the longest side.

Answer 1

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Answer 2

Perimeter P=54cm

s = 54/2=27

Area. of triangle=

v27 (27-20)(27-21)(27-13) =

v27x7x6x14=126cm2

1,/2x21xh=126

h = 126x2/21 = 252/21 =12cm. ANS