Answer:
volume of sphere if radius is divided by 2 is 1/8 of volume of sphere with r radius.
Step-by-step explanation:
The formula to find volume of sphere is:
Volume of sphere = 4/3 π r^3
if radius is divided by 2 i.e r/2
Volume of sphere if r/2 = 4/3 π (r/2)^3
= 4/3 π r^3/8
= (4/3 π r^3) / 8
= (Volume of sphere 1)/8
So, volume of sphere if radius is divided by 2 is 1/8 of volume of sphere with r radius.
Use the quadractic formula
Answer:
x = 4.9t²
Step-by-step explanation:
x is directly proportional to t²
x = kt²
When t = 2 , x = 19.6
Substitute into the equation
x = kt²
19.6 = k * 2²
19.6 = k * 4
19.6 = 4k
k = 19.6/4
k = 4.9
Substitute the value of k into the equation:
x = kt²
x = 4.9t²
Answer:
Grace is right
Step-by-step explanation:
91 x 0.30 = 27.3
91 plus 27.3 equals to 118.3
