Question

A triangle has sides 12 unit ,5 unit ,and 13 unit what is the ratio between its area and perimetre .​

Answer 1

Answer:

1 : 1

Step-by-step explanation:

Given sides of triangle are a = 12 , b = 5 , c = 13

Perimeter = a + b + c

                = 12 + 5 + 13

                = 30 units

Finding area using Herons formula,

p= (a+b+c) / = 30/2 = 15

area = $\sqrt{p(p-a)(p-b)(p-c)}$

        = $\sqrt{15(3)(10)(2)}$

        = $\sqrt{900}$

        = 30 units

Ratio of area and perimeter is 30 : 30 = 1 : 1