Answer:
2160 cm³/hour
Step-by-step explanation:
By default, we know that the volume of a cube is given as s³
Thus, the Volume function, V = s³
When we differentiate with respect to time we have
dV/dt = 3s² (ds/dt), where ds/dt = 0.2
Then we go ahead and substitute all the given parameters
dV/dt = 3 x 60 x 60 x 0.2
dV/dt = 10800 * 0.2
dV/dt = 2160 cm³/hour
This means that the volume decreases by a rate of 2160 cm³/hour at the instant its edge is 60 cm

7 + 14 + 21 + ... + 105 =
= 7(1 + 2 + 3 + ... + 15)
= 7(15)(16)/2
= 840
The volume of the rectangular prism is 1152 cubic feet (
), If the rectangular prism have height of 8 feet and width of 8 feet and a length of 18th feet.
Step-by-step explanation:
The given is,
Let, h - Height of the rectangular prism
w - Width of the rectangular prism
l -Length of the rectangular prism
Step:1
From the given,
h = 8 feet
w = 8 feet
l = 18 feet
Step:2
Formula for volume of Rectangular prism is,

Substitute the values of w, h and l,
V = ( 8 × 8 × 18 )
= 1152
V = 1152 cubic feet
Result:
Thus the volume of the rectangular prism is 1152 cubic feet (
), for the given rectangular prism have height of 8 feet and width of 8 feet and a length of 18th feet.
Your answer is going to be B
B 7.50 reason total spent=4+.50(7)——-> 4+3.50———->$7.50