Question

Find the perimeter and area of a triangle whose sides are 2cm 5cm and 5cm.

Answer 1

Answer:

prermeter of triangle = 12 cm area = 50 cm

Answer 2

The perimeter of a triangle is 12cm

The Area of the Triangle is  2√6 cm²

Explanation:

Given:

1. The sides of the triangle are 2cm, 5cm, and 5cm.

To find:

1. The perimeter of a triangle

2. The area of a triangle

Formula:

$Area =\sqrt{s(s-a)(s-b)(s-c)}$

$s=\frac{a+b+c}{2}$

Perimeter = Sum of the sides

Solution:

==> Side a = 2cm

==> Side b = 5cm

==> Side c = 5cm

==> Perimeter = Sum of the sides of a Triangle

==> Perimeter = a+b+c

==> Perimeter = 2+5+5

==> perimeter = 12 cm

==> The perimeter of a triangle is 12cm

==> $s=\frac{a+b+c}{2}$

==> $s=\frac{2+5+5}{2}$

==> $s=\frac{12}{2}$

==> s = 6

==> $Area =\sqrt{s(s-a)(s-b)(s-c)}$

==> $Area =\sqrt{6(6-2)(6-5)(6-5)}$

==> $Area =\sqrt{6(4)(1)(1)}$

==> Area of the Triangle = $\sqrt{24}$

==> Area of the Triangle = $\sqrt{3\times2\times2\times2$

==> Area of the Triangle = 2√6 cm²

==> The Area of the Triangle is  2√6 cm²