75.8k views
4 votes
The perimeter of a triangle is 42 cm. If two of its sides are 16 cm

and 12 cm. Find its third side

User Alex Rock
by
7.4k points

2 Answers

5 votes

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

User Anton Pegov
by
8.3k points
6 votes

Answer:

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.

User Erez Hochman
by
8.0k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories