Find the area of triangle
whose sides are 9cm.,12cm.,15cm
Answers
Answered by
2
Answer:
9+12+15= 36 is the perimeter of the triangle
please mark me as brainliest
Answered by
2
Answer:
Area of triangle √s (s-a) (s-b) (s-c)
a = 9 cm , b= 12 cm , c= 15 cm
s= a+b+c/2 = 9+12+15/2
= 36/2 = 18 cm
Area = √18 (18-9) (18-12) (18-15)
=√18 x 9 x 6 x 3
= √9 x 2 x 9 x 3 x 2 x 3
= 3 x 2 x 9
Area = 54 cm²
Similar questions