Question

the total surface area of a cube is 150sq.cm.Find the volume and the diagonal of a cube

Answer 1

Surface Area of a cube =150 sq.cm. =6 a×a .So a^2=25=> a=5 . Volume = a×a×a=5×5×5= 125 cubic centimetre . Diagonal of a cube =√a^2+a^2+a^2 =√25+25+25 =5√3 . Hope it helps you...