Evaluate the area of circle, Mathematics

Assignment Help:

If the radius of a sphere is doubled, the surface area is

a. multiplied by 4.

b. multiplied by 2.

c. multiplied by 3.

d. multiplied by 8.

a. The formula for the surface area of a sphere is 4πr2. If the radius is doubled, this implies that the radius is also doubled. The formula then becomes 4π(2r)2. Solve this expression, 4π(4r2) equals 16πr2. Compare 4πr2 to 16πr2; 16πr2 is 4 times greater than 4πr2. Thus, the surface area is four times as great.


Related Discussions:- Evaluate the area of circle

Binomial theorem, use the expansion of (1-x)^7 to find the value of 1.998^7...

use the expansion of (1-x)^7 to find the value of 1.998^7 correct to five significant figures

Find the values of a and b, The midpoint of the line joining (2a, 4) and (...

The midpoint of the line joining (2a, 4) and (-2, 3b) is (1, 2a +1).Find the values of a & b. (Ans: a = 2, b = 2) Ans :   A(2a, 4)           P(1, 2a + 1)                 B(-2,

Equivalent fractions and area models, Need two equal fractions multiply an...

Need two equal fractions multiply and divide 1/6 3/4 5/15 2/7 20/25 24/36 4/9

Intrgers, how to evaluate the sums

how to evaluate the sums

MATLAB, program of curve revolve and create a surface

program of curve revolve and create a surface

Standard interpretations to derivatives, Standard interpretations to deriva...

Standard interpretations to derivatives Example   Assume that the amount of money in a bank account is specified by                                       P (t ) = 500 + 10

Equal matrices, Is this given matrices are called equal Matrices?

Is this given matrices are called equal Matrices?

Explain prime numbers vs. composite numbers, Normal 0 false f...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Area and surface Are, I cant figure out how to study for my math test

I cant figure out how to study for my math test

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd