Question

Rukhsar painted the outside of the cabinet, of measure 1 m × 2 m × 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 = lb + 2(bh + hl)

= 2 × 1 + 2(1 × 1.5 + 1.5 × 2)

= 2 + 2(1.5 + 3.0) = 2 + 2(1.5 + 3.0)

= 2 + 9.0

= 11m² 

Hence, surface area required for paint = 11m²