find the area of triangle when three sides of it is 10cm ,12cm,and 18cm
Answers
Answered by
3
Answer:8 root 5
Step-by-step explanation:
Let a = 10cm b= 12cm c = 18cm
Perimeter, p = 40
Semiperimeter, s = ( p/2) = 20
Using Heron's formula,
area of triangle = root of{(s)(s-a)(s-b)(s-c)}
= root{20 x 10 x 8 x 2}
= root{3200}
=root(2^7 x 5^2)
= 40 root 2 c
Answered by
6
Step-by-step explanation:
Q.
Find the area of triangle when three sides of it is 10 cm, 12 cm and 18 cm.
.
Solution -
We can say that
side,
a = 10 cm
b = 12 cm
c = 18 cm
We have to find the semi-perimeter (s)
s = (a+b+c)/2
= (10+12+18)/2 cm
= 40/2 cm
= 20 cm
Hence area of the triangle = 40√2 cm²
hope it helps.
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