A rectangular wooden box of length breadth and height 7,6 and 5 cm . when it is divided in to three parts and?

Question

painted with red violet and green color of l, b and h 1*1*1 cm find how many have no face colored . I do not know the exact question . but the question will be similar to this can any body tell me the approach to solve this

explanation to this question i not clear ... explain a bit more clear

Answer 1

Figure out the surface area A1 of the uncut box. You will be making two cuts to divide the box into 3 pieces which adds 4 new surfaces. Calculate their area A2. From A1 and A2, figure out the total surface area P to be painted in cm^2. Figure out the number N of 1x1x1 cm cubes you can cut a 7x6x5 cm box into. The total area of the little cubes is 6*N, and the unpainted area is 6*N-P cm^2.

Answer 2

enable length, L = 3 x Breadth, B = 2 x and top, H = x finished component of four partitions = 2 (L × H) + 2(B × H) = 2 × 3x × 2 x + 2 × 2 x × x = 12 x^2 + 4 x^2 = sixteen x^2 New length, L = 3 x /2 Breadth, B = 2 x / 2 = x and top, H = x × 2 = 2 x finished component of four partitions = 2 (L × H) + 2(B × H) = 2 × 3 x / 2 × x + 2 × x × 2 x = 3 x^2 + 4 x^2 = 12 x^2 New section / old section = 12 x^2 / sixteen x^2 = 3 / 4 New section is 3 / 4 component of old.