Question

find the area of an isoceles triangle whose equal sides are of length 15cm each and third side is 12cm

Answer 1

area of triangle = 1/2*base*height
base of triangle =12 cm
height of triangle =
$\sqrt{225 - 36}$
height of triangle =√199
height of triangle =14.106
area of triangle =1/2*14.106*12
area of triangle=84.640 cm^2
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