ABC26GN4750 · Volume and Surface Area

Subject: General Aptitude · Chapter: Volume and Surface Area · Exam: 2009 · Marks: · Difficulty:

Three solid cubes of sides 1 cm, 6 cm and 8 cm are melted to form a new cube. Find the surface area of the cube so formed.

Answer

Answer (as printed):

Explanation

Volume of new cube = (13 + 63 + 83) cm3 = 729 cm3. Edge of new cube = 3 729 cm = 9 cm. ∴ Surface area of the new cube = (6 × 9 × 9) cm2 = 486 cm2.

Explanation as extracted from the printed page; notation may be imperfect.