Answer: 16 gallons
Step-by-step explanation:
Since we are given the information that 1/4 of the gas is left, it simply means that (1 - 1/4) = 3/4 has been used.
The tank was filled and this was 12 gallons of gas.
Let the gas that the tank hold be represented by x. Therefore,
3/4 of x = 12
3/4 × x = 12
0.75x = 12
x = 12/0.75
x = 16
The tank holds 16 gallons of gas.
Answer:
86
Step-by-step explanation:
150 - (2 + x)³
=> 150 - (2 + 2)³
=> 150 - (4)³
=> 150 - 64
=> 86
Therefore, 86 is the correct answer.
Cut it up
1 cylinder and a half sphere
V cylinder=hpir^2
Vsphere=(4/3)pir^3
find each
H=7
r=4
sub
Vcylinder=7pi4^2
V=7pi16
V=112pi
Vsphere (multiply by 1/2 later)
V=(4/3)pi4^3
V=(4/3)pi64
V=(256/3)pi
V=85.33333333333333pi
multply by 1/2 since 1/2 sphere
V=42.6666666666pi
add them
Vclliner+1/2sphere=112pi+42.66666666666pi=154.666666666666pi
pi=3.14 for problem
Vtotal=485.6533333333333333333
hundreth
V=485.65 in^3