Ask Question
5 May, 01:22

Janelle is painting a spherical model of a human cell for a science fair. She uses 615.44 square inches of paint to evenly cover the outside of the cell with one coat of paint. What is the diameter of the cell model? (Use 3.14 for the value of π.)

A-7 in.

B-8 in.

C-14 in.

D-16 in.

+2
Answers (1)
  1. 5 May, 02:45
    0
    To solve for the surface area (SA) of the sphere given its diameter (d), the formula is

    SA = πd^2

    Manipulating the equation to solve for diameter, the equation becomes,

    d = sqrt (SA / π)

    Substituting the value of surface area given and 3.14 for π

    d = sqrt (615.44 in^2 / 3.14) = 14 in

    Therefore, the diameter of the cell model is 14 inches.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “Janelle is painting a spherical model of a human cell for a science fair. She uses 615.44 square inches of paint to evenly cover the ...” in 📘 Mathematics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers