Area of 4 walls =\( 2(l+b)h =2(10+7)\) \(\times\) 5
= 170 sq m
Area of 2 doors and 3 windows = 2(1\(\times\)3)+(2\(\times\)1.5)+2(1\(\times\)1.5)
= 12 sq m
Area to be planted = \(170 -12 = 158 sq m\)
Cost of painting = Rs. 158 \(\times\) 3 = Rs. 474.
So the correct option is (B)
From one face of a solid cube of side 14 cm, the largest possible cone is carved out. Find the volume and surface area of the remaining solid.
Use $\pi = \dfrac{22}{7}, \sqrt{5} = 2.2$