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

Systematic sampling, Systematic Sampling Systematic sampling is a part ...

Systematic Sampling Systematic sampling is a part of simple random sampling in descending or ascending orders. In systematic sampling a sample is drawn according to some predet

Assignment, hi,i want know about Assignment work..

hi,i want know about Assignment work..

Solving equations, darien agrees to sponsor her sister $8 plus $1 for every...

darien agrees to sponsor her sister $8 plus $1 for every mile she walks.Write an expression to show her total money

Factors, Question Suppose that f(x) has (x - 2) 2 and (x + 1) as its on...

Question Suppose that f(x) has (x - 2) 2 and (x + 1) as its only factors. Sketch the graph of f. State all the zeros of f.

LCM, What is the LCM of 4, 6, 18

What is the LCM of 4, 6, 18

Draw the bipartite graph, The graph C n , n  ≥  3 contains n vertices and n...

The graph C n , n  ≥  3 contains n vertices and n edges creating a cycle. For what value of n is C n a bipartite graph? Draw the bipartite graph of C n to give explanation for yo

Problem, a mixture of 40 liters of milk and water contains 10% water.how mu...

a mixture of 40 liters of milk and water contains 10% water.how much water should be added to this so that water my be 20% in the new mixture

Euler equations, Euler Equations - Series Solutions to Differential Equ...

Euler Equations - Series Solutions to Differential Equations In this section we require to look for solutions to, ax 2 y′′ + bxy′ + cy = 0 around x0  = 0. These ki

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