2. Find the perimeter of the following: a. A circle with a diameter 7 cm b. The triangle with side 1500 mm,400

August 2023 2 2 Report

2. Find the perimeter of the following:
a. A circle with a diameter 7 cm
b. The triangle with side 1500 mm,400 mm,and,320mm.

Answer:

a) 21.98 cm

b) 2220 mm

Step-by-step explanation:

(a) Perimeter of the circle = 2πr

Here they gave only diameter

But we know that radius is half of the diameter

So radius = 1/2 × 7

Radius = 3.5 cm

π = 3.14

So perimeter = 2 × 3.14 × 3.5

⇒ 2 × 10.99

Perimeter ⇒ 21.98 cm

(b)

Perimeter of triangle = Sum of all sides

So perimeter = 1500 + 400 + 320

Perimeter ⇒ 2220 mm

Hope this will help you