Question

the side of an equilateral triangle measure 7 3/8
cm. find 1/2 of the perimeter of the triangle.​

Answer 1

Step-by-step explanation:

P=21

a Side = 7

Solution

P=3a=3·7=21

Answer 2

Given :

• Side of an equilateral triangle = 7 3/8 cm

To find :

• 1/2 of the perimeter of the triangle

Solution :

⇒ Let's first convert the side from mixed fraction to improper fraction.

7 3/8 = 8 × 7 + 3/8

        = 56 + 3/8

        = 59/8

⇒ Now, let's find the Perimeter.

= 59/8 × 3

= 59/8 × 3/1 [Let's make 3 to 3/1]

= 59 × 3/8 × 1

= 177/8

⇒ Now, let's divide the perimeter by 2 to find 1/2 of the perimeter.

1/2 of Perimeter = 177/8 ÷ 2

                           = 177/8 × 2

                           = 177/16

Therefore, 1/2 of the perimeter of the triangle is 177/16 cm.