An oblique candle with a volume of 270 cubic centimeters is 18 centimeters tall. The width of the triangular candle base is 5 centimeters, and the width of the slanted candle is 7 centimeters. What dimensions of the box are required to fit the candle?

Volume of the candle:

V = B * h (where B is the base area and h is the height)

270 = B * 18

B = 270 : 18

B = 15 cm²

B = a * b / 2

B = 5 * b / 2

15 = 2.5 b

b = 15 : 2.5

b = 6 cm

Therefore dimensions of the box are: a = 7cm, b = 6 cm, c = 18 cm.

Answer: B) 7 by 6 by 18 cm.