Answer:
about 8.2 cm
Step-by-step explanation:
The key is to realize that the volume never changes.
The formula for the volume of a sphere is (4/3)*pi*radius^3
22/7 is being substituted in place of pi in this problem
The volume of one of the small spheres is
(4/3)*(22/7)*2^3 is about 33.524 cm^3
64 of those spheres would have a volume of 33.524*64, or about 2145 cm^3
Now, the problem is to find a sphere with a volume of 2145 cm^3
Volume = (4/3)*(22/7)*radius^3
plug in and solve
2145 = 4.1905*r^3
r^3=511.87
r is about equal to 8.2 centimeters
2/15
4/5-2/3
convert so they have the same denominator
12/15-10/15
solve
2/15
Answer:
i) 25
ii) 30:70; 30 out of 70 pencils will be blue.
Step-by-step explanation:
i) 70 - (15+30)= 25 other colors in the bag.
ii) 30:70
Answer:
69
Step-by-step explanation:
=
equals
k = 15.6
First, simplify
to 1.2. Your problem should look like:
= 1.2
Second, multiply both sides by 13. Your problem should look like: k = 15.6, which is the answer.
