What is the percentage increase in the area of a triangle if it's each

1.	What is the percentage increase in the area of a triangle if it's each side is doubked
Answer» Let a,b,c be the sides of the original ∆ & s be its semi perimeter. S= (a+b+c)/2 2s= a+b+c.................(1) The sides of a new ∆ are 2a,2b,2c [ given: Side is DOUBLED] Let s' be the new semi perimeter. s'= (2a+2b+2c)/2 s'= 2(a+b+c) /2 s'= a+b+c S'= 2s. ( From eq 1)......(2) Let ∆= AREA of original triangle ∆= √s(s-a)(s-b)(s-c).........(3) & ∆'= area of new Triangle ∆' = √s'(s'-2a)(s'-2b)(s'-2c) ∆'= √ 2s(2s-2a)(2s-2b)(2s-2c) [From eq. 2] ∆'= √ 2s×2(s-a)×2(s-b)×2(s-c) = √16s(s-a)(s-b)(s-c) ∆'= 4 √s(s-a)(s-b)(s-c) ∆'= 4∆. (From eq (3)) Increase in the area of the triangle= ∆'- ∆= 4∆ - 1∆= 3∆ %increase in area= (increase in the area of the triangle/ original area of the triangle)× 100 % increase in area= (3∆/∆)×100 % increase in area= 3×100=300 % Hence, the percentage increase in the area of a triangle is 300% READ more on Brainly.in - brainly.in/question/503282#readmore

What is the percentage increase in the area of a triangle if it's each side is doubked

Answer»

Let a,b,c be the sides of the original ∆ & s be its semi perimeter.

S= (a+b+c)/2

2s= a+b+c.................(1)

The sides of a new ∆ are 2a,2b,2c

[ given: Side is DOUBLED]

Let s' be the new semi perimeter.

s'= (2a+2b+2c)/2

s'= 2(a+b+c) /2

s'= a+b+c

S'= 2s. ( From eq 1)......(2)

Let ∆= AREA of original triangle

∆= √s(s-a)(s-b)(s-c).........(3)

∆'= area of new Triangle

∆' = √s'(s'-2a)(s'-2b)(s'-2c)

∆'= √ 2s(2s-2a)(2s-2b)(2s-2c)

[From eq. 2]

∆'= √ 2s×2(s-a)×2(s-b)×2(s-c)

= √16s(s-a)(s-b)(s-c)

∆'= 4 √s(s-a)(s-b)(s-c)

∆'= 4∆. (From eq (3))

Increase in the area of the triangle= ∆'- ∆= 4∆ - 1∆= 3∆

%increase in area= (increase in the area of the triangle/ original area of the triangle)× 100

% increase in area= (3∆/∆)×100

% increase in area= 3×100=300 %

Hence, the percentage increase in the area of a triangle is 300%