Ask Question
7 August, 10:36

What is the area of a circle with a diameter of 15.8 cm? Use 3.14 for pi and round your final answer to the nearest hundredth. Enter your answer in the box.

cm2

+3
Answers (2)
  1. 7 August, 10:42
    0
    195.97 cm²

    Step-by-step explanation:

    From question statement, we observe that

    We have given the diameter of circle and we have to have to find area of circle.

    diameter = d = 15.8 cm and area = A = ?

    The formula to find area of circle is

    Area = πr² where r is radius of circle.

    Firstly, we have to find the radius of circle.

    Diameter = 2 (radius)

    d = 2r

    r = d / 2

    Putting the given value of diameter, we have

    r = 15.8 / 2

    r = 7.9 cm

    Now putting the value of radius and pi in formula, we get

    A = (3.14) (7.9) ²

    A = (3.14) (62.41

    A = 195.9674 cm²

    We have to round off it to the nearest hundreth.

    Area = A = 195.97 cm² which is the answer.
  2. 7 August, 10:47
    0
    A=195.97 cm^2

    Step-by-step explanation:

    Area of a circle is given by

    A = pi r^2

    We are given the diameter. We need to find the radius

    d = 2r

    15.8 = 2r

    Divide by 2

    7.9 = r

    Now we can find the area

    A = pi * (7.9) ^2

    A = pi * 62.41

    Let pi = 3.14

    A = (3.14) * 62.41

    = 195.9674 cm^2

    We round to the nearest hundredths

    A=195.97 cm^2
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “What is the area of a circle with a diameter of 15.8 cm? Use 3.14 for pi and round your final answer to the nearest hundredth. Enter your ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers