Math, asked by Hanumanji14, 1 year ago

find the area of the triangle whose sides are 13cms 14cms and 15cms.

Answers

Answered by alessre
3
Hello,
we use the formula of Heron:
A=√p×(p-a)×(p-b)×(p-c)
where:
p is the semiperimeter of the triangle, and a,b c are the sides.

we calculate the semiperimeter of the triangle:
p=(a+b+c):2=(13+14+15):2=42:2=21 cm

we calculate the area:
A=√21×(21-13)×(21-14)×(21-15);
  =√21×8×7×6=√7056=84 cm²

The area of the triangle is 84 cm².

bye :-)
Answered by tintin15551
0

Answer:

84cm^2

Step-by-step explanation:

Step-by-step explanation:

By heroins formula

We get s=13+14+15/2

S= 42/2 =21

Now area= root of s(s-a)(s-b)(s-c)

Root of 21 (21-13)(21-14)(21-15)

Root of 21 (8)(7)(6)

Root of 21 (366)

Root of 7056

84cm^2 is the area

plsa mrk it as brainliest

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