5. The bottom and top of a box are rectangles twice as long as they are wide. Find the volume of the box if it is 4 ft high and has a total surface area of 220 ft^2. Which equation can you use to solve this problem?
4w^2 + 8w = 220
4w^2 –16w = 220
4w^2 + 24w = 220
4w^2 –24w = 220
PLEASE ANSWER
2007-12-18 07:16:24 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
l=2w
surface area=
2(l*w)+2(l*h)+2(w*h)= 220
h = 4 given
=>2(2w*w)+2(2w*4)+2(w*4)=220
=> 4w^2 + 24w = 220
=> 3rd option is correct
2007-12-18 07:22:04 · answer #1 · answered by s0u1 reaver 5 · 0⤊ 0⤋
4w2 + 24w = 220
2007-12-19 17:04:12 · answer #2 · answered by sunhotburn 1 · 0⤊ 0⤋
Surface = 2(2x^2)+4(2x+4x)so
4x^2+24x=220 ( the third one)
2007-12-18 15:23:30 · answer #3 · answered by santmann2002 7 · 0⤊ 0⤋