The sphere on the left has radius rand a volume equal to 40 units. Find the volume of a sphere with twice the radius.
A. 80 units3
B. 200 units 3
C. 320 units3
D. 160 units
SUBMIT

320units³

Step-by-step explanation:

Volume of a sphere V = 4/3πr³

40 = 4/3πr³

120 = 4πr³

30 = πr³

r³ = 30/π

r³ = 30/3.14

r = 2.12

r is the radius of the sphere

Since we are to find the volume of a sphere with twice the radius, then;

R = 2r

The formula becomes

V = 4/3π(2r)³

V = 4/3π8r³

V = 32π(2.12)³/3

Given

V = 32π(9.55)/3

V = 320units³

Hence the required volume is 320units³

we need more info to solve this

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet