ayushchaudharytharu1
ayushchaudharytharu1 ayushchaudharytharu1
  • 04-08-2021
  • Mathematics
contestada

Cyruer.
Pucic Or the
(a) The surface area and volume of a sphere are in the ratio of 3 : 7
cm. What is the circumference
of its great circle and volume ? Find it.​

Respuesta :

caylus
caylus caylus
  • 04-08-2021

Answer:

Hello,

Step-by-step explanation:

Area of the sphere:

[tex]S=4*\pi *r^2[/tex]

Volume of the sphere:

[tex]V=\dfrac{4*\pi *r^3}{3}[/tex]

[tex]\dfrac{S}{3} =\dfrac{V}{7} \\\\\dfrac{4*\pi *r^2}{3} =\dfrac{4*\pi *r^3}{3*7} \\\\1=\dfrac{r}{7} \\\\\\r=7\\\\great \ circle: 2*\pi* r=14*\pi\\[/tex]

[tex]Volume=\dfrac{4*\pi *7^3}{3} =\dfrac{1372*\pi }{3} \approx{1436,7550...(cm^3)}[/tex]

Answer Link

Otras preguntas

Zane and Shelbys grandfather is 5 times as old as the total of their ages. If their grandfather is 70 and Shelby is 6, how many years old is Zane
What possible physical evidence has been found to confirm hezekiah's reform?
43.278 kg - 28.1 g use significant figures rule
Explain the pun biking without a helmet on is a no brainer
Calculate the area of the figure below using the following information: Area of triangle ABC = 23.85 square units Area of triangle ACD = 29.4 square units Ar
Why are places around the world increasingly similar
The interest rate at which the federal reserve banks lend to commercial banks is called the:
what makes a question able to be answered by science?
Germany is an industrial leader because _________________. a. of early development c. an emphasis on industry b. many natural resources d. all of the above
Change 24 yard per second into feet per second