find the perimeter and area of a triangle whose side are length 13cm,14cm,15cm
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Step-by-step explanation:
given that:
sides are 13cm, 14cm, 15cm.
perimeter of triangle = 13+14+15= 42 cm
then find area of triangle,
semiperimeter of triangle = 13+14+15/2
= 42/2= 21cm
area of triangle=root S(s-a)(s-b)(s-c)
= root 21(21-13)(21-14) (21-15)
= root 21(8)(7)(6)
=root 7056
= 84cm2
Area of triangle = 84 cm2
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