Question

39. We increase the sides of a
equilateral triangle in 20%, 30%
and 50% respectively. find the %
increase in his paremeter.
(A)33.33% (B)66.66% (C)96%
(D)60% (E)NOT​

Answer 1

Answer:

A 33.33%

Step-by-step explanation:

let the side of the triangle be 100

1st perimeter (100×3)=300

A.T.P

now three sides are (100+20)=120; (100+30)=130;(100+50)=150

therefore, the new perimeter=(120+130+150)=400

the increase in percentage,

{(400-300)÷300}×100=33.33%