Question

Find the area of an isoceles triangle whose one side is 4m greater than its equal sides and perimeter is 40m ​

Answer 1

Answer:71.55m²

Step-by-step explanation:

Given

one side is 4m greater than its equal sides and perimeter is 40m ​

So let x be the two equal sides

So the another side will be x+4

So

(x+4)+2x=40

3x+4=40

x=12

So the sides are 12,12,16

Now by applying herons formula

S=40/2

=20

A=√s(s-a)(s-b)(s-c)

A=√20×8×8×4

A=71.55m²

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