Question

The sides of a triangle are 3 cm, 5 cm and 6 cm. What is its area?
a. 2√3cm2
b. 4√14cm2
c. 5√12cm2
d. 2√5cm2
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Answer 1

Answer:

Step-by-step explanation:

by Heron’s Formula,

A=√​s(s−a)(s−b)(s−c)​​​

where S (0.5*​​(a+b+c))​​ is one half of the perimeter of the triangle, sometimes called the semi-perimeter.

A is the area of the triangle.

And a,b,c are the sides of the triangle

So if a=3 cm ,b=5 cm and c=6 cm

thus , Using Heron’s Formula we get the semi-perimeter as 7 cm

A= sqrt(7*4*2*1)=sqrt(56)=7.48 sq. cm.

thus the area of the triangle with side 3 cm,5 cm and 6 cm is 7.48 sq cm.

Answer 2

Answer:

7.48cm²

Step-by-step explanation:

hope it help u