The perimeter of a right triangle is 25 meters, and the area is 20 square meters. The lengths of the sides are each multiplied by 3. What is the area of the new triangle? *Correct answer gets brainliest*
A. 120 m ²
B. 250 m ²
C. 220 m ²
D. 180 m ²

180 (D)(Mark Brainliest If Helped )

Step-by-step explanation:

The Heron's formula for calculating area is

S=√p(p-a)(p-b)(p-c)

where

p is perimiter divided into 2

p=(a+b+c)/2

Then length of each side is multiplyed into 3

New p is bigger than old by three times

p=3(a+b+c)/2  

S=√3p*3(p-a)*3(p-b)*3(p-c)=9√p(p-a)(p-b)(p-c)

Area of new triangle are bigger than area of old triangle by 9 times.

S=20*9=180 square meters

Area of new triangle is 180 square meters.

the correct answer is the second option

1. 22

2. 1

3. 7

4. 18

step-by-step explanation

e2020 got it right