Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy.

In this lesson, we will learn how to find the perimeter of a triangle as a value and as an algebraic expression by adding its side lengths.

Q1:

What is the perimeter of this triangle?

Q2:

Q3:

Write an expression in terms of π₯ , for the perimeter in cm, of the isosceles triangle shown below.

Q4:

What is the range of possible perimeters, π , of the given figure π΄ π΅ πΆ π· πΈ if π΄ πΆ = 5 and π· πΆ = 9 ?

Q5:

In the parallelogram shown, π΅ π = 3 8 and π πΆ = 5 4 . What is the perimeter of β³ π΄ π π· ?

Q6:

If the perimeter of this triangle is 234, find the length of the third side.

Q7:

The base of an isosceles triangle is 4 more than the length of one of the equal sides. Let π be the length of one of the equal sides and write an equation for π , the perimeter of the triangle.

Q8:

In triangle π΄ π΅ πΆ we have π΄ π΅ = π΄ πΆ and π β πΆ = 6 0 β . If the perimeter of the triangle is 46.2, what is the length of π΅ πΆ ?

Q9:

Find the perimeter of a triangle whose side lengths are 7, 25, and 22.

Q10:

Find the perimeter of a triangle whose side lengths are 8 cm, 10 cm, and 4 cm.

Q11:

Find the perimeter of β³ π΄ π΅ πΆ .

Q12:

Q13:

Q14:

π΄ π΅ πΆ is a triangle where π = 2 8 c m , π + π = 4 9 c m and π β π = 3 c m . Find the perimeter of the triangle giving the answer to the nearest centimetre.

Q15:

Calculate the perimeter of an equilateral triangle whose side length is 3.39 cm.

Q16:

Determine the perimeter of the triangle whose sides have the same length of 22 cm.

Q17:

The perimeter of a triangular piece of land is 166 metres. Find the length of its third side if the sum of two of its sides is 102 metres.

Q18:

The side length of an equilateral triangle is 8 π₯ units and its perimeter is π units. Write the mathematical relation between π and π₯ .

Q19:

Find the perimeters of β³ π΄ π΅ πΆ and β³ π΅ πΆ π· .

Q20:

π΄ π΅ πΆ is a triangle, where π΅ πΆ = 5 5 cm, π΄ πΆ β π΄ π΅ = 1 3 cm, and the perimeter is 124 cm. Find the lengths of π΄ πΆ and π΄ π΅ giving the answers to the nearest centimetre.

Q21:

π΄ π΅ πΆ is a triangle, where π΅ πΆ = 6 3 cm, π΄ πΆ β π΄ π΅ = 2 3 cm, and the perimeter is 150 cm. Find the lengths of π΄ πΆ and π΄ π΅ giving the answers to the nearest centimetre.

Q22:

Given that π· πΉ = 1 0 0 c m and π π = 2 2 c m , find the perimeter of β³ π· πΈ π to the nearest hundredth, if needed.

Q23:

Given that π· πΉ = 1 7 6 c m and π π = 3 8 . 8 c m , find the perimeter of β³ π· πΈ π to the nearest hundredth, if needed.

Q24:

The perimeter of a triangle is given by οΉ π₯ + 5 π₯ + 1 ο 5 cm. The lengths of two of its sides are οΉ β 8 π₯ + π₯ ο 5 cm and οΉ β 3 π₯ + 4 ο 5 cm. Express the length of the third side in terms of π₯ .

Q25:

The perimeter of a triangle is given by οΉ 6 π₯ β 6 π₯ + 7 ο 4 5 cm. The lengths of two of its sides are οΉ β 4 π₯ + 5 π₯ ο 4 5 cm and οΉ 8 π₯ + 7 ο 5 cm. Express the length of the third side in terms of π₯ .

Donβt have an account? Sign Up