An iron cubes of side 10 cm is hammered into a rectangular sheet of thickness 0.5 cm. If the sides of the sheet are in the ratio 1 : 5 the sides are
Choices:
A) 10 cm, 50 cm B) 20 cm, 100 cm C) 40 cm, 200 cm D) None of these E) Cannot be determined
Solution   Let the sides of the sheet be x and 5x.   Then,volume of the sheet= volume of the cube   ‹=› x × 5x ×1/2   ‹=› 10×10×10   ‹=› 5x2= 2000   ‹=› x2= 400   ‹=› x = 20.   The sides are 20 cm and 100 cm.   Answer 20 cm, 100 cm
<result>B</result>
An iron cubes of side 10 cm is hammered into a rectangular sheet of thickness 0.5 cm. If the sides of the sheet are in the ratio 1 : 5 the sides are