Mathematics, 23.10.2019 17:00 faithyholcomb
What is the ratio for the volumes of two similar spheres, given that the ratio of their radii is 2: 7?
a. 49: 4
b.8: 343
c.343.8
d.4: 49
Answers: 2
![\dfrac{V}{V'}\\\\\\=\dfrac{\dfrac{4}{3}\pi r^3}{\dfrac{4}{3}\pi r'^3}\\\\\\=\dfrac{r^3}{r'^3}\\\\\\=\left(\dfrac{r}{r'}\right)^3\\\\\\=\left(\dfrac{2}{7}\right)^3~~~~~~~~~~~~~~~~~~~~~~[\textup{Using equation (i)}]\\\\\\=\dfrac{8}{343}\\\\\\=8:343.](/tpl/images/0342/7458/1fb27.png)
Another question on Mathematics
Mathematics, 21.06.2019 16:30
International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?
Answers: 2
Mathematics, 21.06.2019 20:30
Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0
Answers: 2
Mathematics, 21.06.2019 21:30
Julie goes to the sports store and spends $40.50 before tax. she buys a pair of shorts for $21.75 and 3 pairs of socks that each cost the same amount. how much does each pair of socks cost? $$
Answers: 1
You know the right answer?
What is the ratio for the volumes of two similar spheres, given that the ratio of their radii is 2:...
Questions
History, 06.10.2019 10:20
History, 06.10.2019 10:20
Physics, 06.10.2019 10:20
Physics, 06.10.2019 10:20
Mathematics, 06.10.2019 10:20
Mathematics, 06.10.2019 10:20
English, 06.10.2019 10:20
Mathematics, 06.10.2019 10:20
Mathematics, 06.10.2019 10:20
Mathematics, 06.10.2019 10:20
