Question

The perimeter of a triangle is 42 cm. If two of its sides are 16 cm

and 12 cm. Find its third side

Answer 1

Explanation:

you really need help with that ?

the perimeter means the way of 1 time around the whole shape.

in case of a triangle : going along all 3 sides. in other words - the sum of all 3 sides.

42 = 16 + 12 + third side

third side = 42 - 16 - 12 = 14 cm

Answer 2

14cm

Explanation:

To find the third side of a triangle when given the perimeter and the length of two of its sides, you can use the following formula:

Perimeter = side1 + side2 + side3

Given the perimeter of 42cm and two sides 16cm and 12cm

We can find the third side by subtracting the known sides from the perimeter:

side3 = Perimeter - side1 - side2

so,

side3 = 42 - 16 - 12 = 14cm

Therefore, the third side of the triangle is 14cm.