Question

if every side of a triangle is doubled,then find the percent increase in area of triangle formed?

Answer 1

Hey .....

Let’s say side of a triangle are a,b and c.
If it’s doubled ,the sides will be 2a,2b,2c.
Semi perimeter =2a+2b+2c/2
=2s
Area of triangle =sqrt.[2s(2s-2a)(2s-2b)(2s-2c)]
Sqrt.[16s(s-a)(s-b)(s-c)]
4 sqrt.[(s-a)(s-b)(s-c)]
That’s is triangle’=4#
Increase in area=4#-#
=3#
Percentage increased is 3#/1#*100
=300 percent.




Hope helps u;)

Answer 2

Answer:

read carefully this photo

so answer is 300%