An inverted square pyramid 20 ft high with a square base having 8-foot sides is filled with oil at the rate of 2 cubic ft/s. How fast is the oil rising when it is at 4 ft deep? Volume of square pyramid: , where A = area of the base, h = height.
A.
0.313 ft/s
B.
0.625 ft/s
C.
0.78 ft/s
D.
1.25 ft/s

step-by-step explanation:

a rhombus is a parallelogram enjoying his symmetry.

an

y = 6x -3y -12

y +3y +12 = 6x

=> . x = { 2y / 3 +2 } this is equation of line in terms of x

=> . if line meets the x-axis the co-ordinates of meeting point would be ( x , 0 )

=> . x = 2 ( 0 ) / 3 + 2

=> . x = 2

so, the point is ( 2 , 0 )

c

step-by-step explanation:

answer: 3.26019516

step-by-step explanation: