• # question_answer The whole surface of a rectangular block is 8788 square cm. If length, breadth and height are in the ratio of$4:3:2$, find length. A)  26 cm                         B)  52 cm  C)  104 cm            D)  13 cm

(b): Let the common ratio be = x Then, length = 4x, breadth = 3x and height = 2x As per question: $2(4x.3x+3x.2x+2x.4x)=8788$ $\therefore$ $2(12{{x}^{2}}+6{{x}^{2}}+8{{x}^{2}})=8788$ $\Rightarrow$   $52{{x}^{2}}=8788\Rightarrow x=13$ $\therefore$      Length $=4x=52\text{ }cm$.