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

Emi, calculation of emi %

calculation of emi %

Logorithms, log base 5 (3-2x) + log base 5 (2+x) = 1

log base 5 (3-2x) + log base 5 (2+x) = 1

Substitution, When I complete each of the three methods, should I get the s...

When I complete each of the three methods, should I get the same x and y values?

Topology, Is usual topology on R is comparable to lower limit topology on R...

Is usual topology on R is comparable to lower limit topology on R

Measures of central tendency-computation method, Computation method   ...

Computation method           Whereas L = Lower class boundary of the class having the mode             f 0 = Frequency of the class below the modal class

What is sherman''s pulse rate in beats per minute, Sherman took his pulse f...

Sherman took his pulse for 10 seconds and counted 11 beats. What is Sherman's pulse rate in beats per minute? A 10 second count is 1/6 of a minute. To find out the number of be

How many students are study physics alone, A class has 175 learners. The gi...

A class has 175 learners. The given table describes the number of learners studying one or more of the subsequent subjects in this case                 Subjects

Which of the subsequent decimals is the greatest number, Which of the subse...

Which of the subsequent decimals is the greatest number? If you add zeros to the end of every of the numbers so that each number has 5 places after the decimal point, it is sim

the volume of a pyramid, Write a script to determine the volume of a pyram...

Write a script to determine the volume of a pyramid, which is 1/3 * base * height, where the base is length * width.  On time the user to enter values for the length, width, and th

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