Question

Find the perimeter of each of the following shapes: (a) A triangle of sides 3 cm, 4 cm and 5 cm. (b) An equilateral triangle of side 9 cm. (c) An isosceles triangle with equal sides 8 cm each and third side 6 cm.

Answer 1

Q.1. 12
Q.2 27.
Q.3. 22

Answer 2

$\huge\mathfrak{\underline{Correct\:Question:}}$

Find the perimeter of each of the following shapes:

(a) A triangle of sides 3 cm, 4 cm and 5 cm

(a) A triangle of sides 3 cm, 4 cm and 5 cm(b) An equilateral triangle of side 9 cm

(a) A triangle of sides 3 cm, 4 cm and 5 cm(b) An equilateral triangle of side 9 cm(c) An isosceles triangle with equal sides 8 cm each and third side 6 cm.

_____________________________

Given that:-

• Sides of triangle = 3cm, 4cm and 5cm.

• Side of equilateral triangle = 9cm

• Two sides of isosceles triangle = 8cm. Third side = 6cm

To find:-

• The perimeter of the shapes. [As given in question]

Answer:-

$\bold{STEP-BY-STEP-EXPLANATION}$

(a)  Perimeter of triangle = 3 + 4 + 5

= 12 cm

(b) Perimeter of an equilateral triangle = 3 × side

= 3 × 9

= 27 cm

(c) Perimeter of isosceles triangle = 8 + 8 + 6

= 22 cm

Therefore,

Perimeter of triangle = 12cm

Perimeter of an equilateral triangle = 27cm

Perimeter of isosceles triangle = 22cm.

Extra information:-

[sides of triangle = a,b,c ] Perimeter of triangle = the perimeter P is defined as: P = a + b + c. 

Perimeter of equilateral triangle = P = 3a [where a determines the equal sides of triangle]

Perimeter of isosceles triangle = P = 2a + b. [where A and B are the length of the legs and base]

#BAL

#AnswerWithQuality