find the area of triangle
whose side are 42cm, 34cm, 20cm in length
Answers
Answered by
1
Answer:
area if triangle= 1/2× base × attitude
this is formula you can use it
Answered by
7
Answer:
336 sq cm
Step-by-step explanation:
let a=42 , b=34, c =20
s=a+b+c/2
s= 42+34+20÷2
s= 96÷2
s=48
ar(abc)=√s(s-a)(s-b)(s-c)
=√48(48-42)(4 8-34)(48-20)
=√48×6×14×28
=√6×8×6×7×2×7×4
=6×7×2√2×2×2×2
=84×2×2
=336 sq. cm
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