The perimeter is the sum of all sides of a polygon. The perimeter of the triangle is: P = a + b + c where P - perimeter of the triangle, a, b, c - sides of the triangle.
It is given: P = 14.5 cm c = 6.2 cm
If, t<span>he longest side (c) is twice that of the shortest side (a), then c = 2a </span><span>Therefore, the equation that can be used to find the length of the shortest side is <u>a = c ÷ 2</u>.</span><span>
</span>⇒ a = c ÷ 2 = 6.2 cm ÷ 2 ⇒ a = 3.1 cm
By knowing two sides (c and a) and perimeter (P), we can calculate the length of the third side (b). If P = a + b + c, then <span>the equation that can be used to find the length of the side b is <u>b = P - a - c</u>.
</span>⇒ b = P - a - c = 14.5 cm - 6.2 cm - 3.1 cm ⇒ b = 5.2 cm<span> </span>
