Question

Rukhsar painted the outside of the cabinet of measure 1 m x 2 m x 1.5 m. How much surface area did she cover if she painted all except the bottom of the cabinet.

 

Answer 1

Length (l) of the cabinet = 2 m 
Breadth (b) of the cabinet = 1 m 
Height (h) of the cabinet = 1.5 m 
Area of the cabinet that was painted. 
= 2h (l + b) + lb 
= [2 x 1.5 x (2 + 1) + (2) (1)] m² 
= [3(3) + 2] m² 
= (9 + 2) m² 
= 11 m²