A volume of a wall is 128 cm3. If the height of the wall is 6 times its breadth and the length is 9 times its breadth, find the breadth.
Answer & explanation
Correct answer: option 3
Let the breadth = a cm
Height = 6 × breadth = 6a
Length = 9 × breadth = 9a
Volume = Length × Breadth × Height
128 = 9a × 6a × a
128 = 54a3
a3 = \(\frac{128}{54}\) = 2.37
$⇒a=\sqrt[3]{2.37cm}$