Find the area of the triangle with heron method -:
1. 21cm , 17 cm , 10 cm
2. 42 cm , 39 cm , 45 cm
No spams
1. 21cm , 17 cm , 10 cm
2. 42 cm , 39 cm , 45 cm
No spams
Add an Answer
More Questions From This User See All
Copyright © 2024 EHUB.TIPS team's - All rights reserved.
Answers & Comments
Verified answer
Answers:
Question 1:
21 cm, 17 cm and 10 cm
a = 21 cm
b = 17 cm
c = 10 cm
S =
=
Area =
=
=
=
= 3 x 7 x 2 x 2
= 84cm²
∴ The area of the triangle is 84cm².
Question 2:
42 cm, 39 cm and 45 cm
a = 42 cm
b =39 cm
c = 45 cm
S =
=
Area =
=
=
=
=
=3 x 3 x 3 x 7 x 2 x 2
= 756cm²
∴ The area of the triangle is 756cm².
Knowledge Bytes:
→ Heron's Formula
The area of a triangle of sides a, b and c is
where semi-perimeter S is the half of the sum of all sides of the triangle. 
.