Question

Rukshar painted the outside of the cabinet of measure $1m\times 2m\times 1.5m.$ How much surface area did she cover if she painted all except the bottom of the cabinet?

Answer 1

Here, the length of cabinet l = 2 m, the breadth of cabinet b = 1 m and the height of cabinet h = 1.5 m.
(0.5 mark)

$\therefore$ The surface area of cabinet that has been painted
= lb + 2(bh + hl)
$=2\times 1+2(1\times 1.5+1.5\times 2)=2+2(1.5+3.0)=2+9.0=11m^2$
Hence, the surface area of cabinet she painted is $11m^2$.
(2.5 marks)