The dimensions of a rectangle metal box are 3 cm,5 cm,and 8 cm.If the first two dimensions are increased by the same number of centimeters,while the third dimension remains the same,the new volume is 34 cm^3 more than the original volume.What is the new dimension of the enlarged rectangular metal box

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Answers

2015-09-03T20:32:08+08:00
3.5 by 5.5 by8 cm first multtipy the 3 x 5 x8 = 120 add 34 = 154 then represent the two dimensions as (x+3) (x+5) ( 8) then the equation will be 8x^2 +64x-34 then simplify (2x-1) (2x+17) then equate to zero x=1/2, x=-17/2
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