Area of 4 walls of a cuboid is 448 sq cm, its length is 18 cm and height is 8 cm. What is its breadth (in cm)?
Area of 4 walls of a cuboid 448 sq cm
$$\Rightarrow 2(bh+hl) = 448$$
$$\Rightarrow (bh+hl) = 224$$
$$\Rightarrow (b\times8+8\times18) = 224$$
$$\Rightarrow 8\times b = 224-144=80$$
$$\Rightarrow b = 10$$
so the answer is option A.
Create a FREE account and get:
