en

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

The area of a circle is 4.3 cm2. Find the circumference of the circle, rounding your answer to 3 significant figures.

Solution

The area of a circle is 4.3 cm2. Find the circumference of the circle, rounding your answer to 3 significant figures.

Solution

c i rc u m f ere n ce : 7.35 c m

Solution steps

Given:

a re a : 4.3 c m^{2}

Radius given

A re a = 4.3 : r = 1.16992 \dots

Circle circumference given

r = 1.16992 \dots : C = 7.35087 \dots

c i rc u m f ere n ce : 7.35 c m

Popular Examples

Find the accumulated value of an investment of 9000 at 7.5% compounded continuously for 6 years.Question 2 options:The perimeter of a rectangular garden is 316 feet. If the length of the garden is 92 feet, what is its width? feet hat is the radius of a sphere with a volume of 5271m^3 , to the nearest tenth of a meter?5700 dollars is placed in an account with an annual interest rate of 6.5%. To the nearest year, how long will it take for the account value to reach 20900 dollars?You draw one card from a 52-card deck. Then the card is replaced in the deck and the deck is shuffled, and you draw again. Find the probability of drawing a two each time.