the dimensions of a brick in inches are 2 by 4 by 8. How many such bricks are needed to have a total volume of exactly 1 cubic foot ?
hey heyy . im not asking for the answer maybe if someone could just show me how to start solving this question
thanks
=]
2007-12-30 14:04:46 · 6 answers · asked by helppmee =] 2 in Science & Mathematics ➔ Mathematics
yeah it is 1 by 4 josh is right everyone is trying to trick u
2008-01-02 15:26:56 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Volume of each brick = 2*4*8 = 64 cubic in.
1 cubic foot = 1728 cubic inches(i.e. 12*12*12)
1728/64 = 27 bricks.
2007-12-30 14:26:27 · answer #2 · answered by steiner1745 7 · 1⤊ 0⤋
Convert the dimensions into feet...by dividing by 12.
so...
the volume would be (2/12 x 4/12 x 8/12) for one brink and u need X amounts of those bricks to give u 1 ft.... soo...
(2/12 x 4/12 x 8/12)X=1
solve for x
u should get 27
=]
2007-12-30 14:13:03 · answer #3 · answered by x3floridagurl3x 3 · 0⤊ 0⤋
one brick = 2 by 4 by 8 inches = 64 cubic inches/brick
pay attention to what the units are doing, so they cancel to give you what you want.
(1728 cubic inches/cubic foot)/(64 cubic inches/brick)
= (27 bricks)/(cubic foot)
2007-12-30 14:13:05 · answer #4 · answered by saejin 4 · 1⤊ 0⤋
100%shour it is 1 by 4 if aney one elese sais diffrent ther trying to trick you
2007-12-30 14:09:09 · answer #5 · answered by Anonymous · 2⤊ 2⤋
27 :-D
2007-12-30 14:12:24 · answer #6 · answered by Melanie F 3 · 0⤊ 2⤋