Question

Find the area of a triangular plot of land whose sides are 13m, 14m and perimeter 42 m

Answer 1

Answer:

perimeter of triangle=42m

13+14+x=42

27+x=42

x=42-27=15m

a=13m b=14m c=15m

s=a+b+c/2

= 13+14+15/2

= 42/2=21m

s-a=21-13=8

s-b=21-14=7

s-c=21-15=6

Area of triangle=√s(s-a)(s-b)(s-c)

=√21x8x7x6

=√3x7x2x2x2x7x2x3

=3x7x2x2

=84m²

Hence the area of triangle is 84m².

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Answer 2

Answer:

84m^2

Step-by-step explanation:

As perimeter is 42

so third side is 42-(13+14)=15

Solve then by heron formula

You will get answer as 84m^2