Question

the paint in a certain container is sufficient to paint an area equal to 14.64 m sq. how many bricks of dimensions 11.5cm * 10cm * 6cm can be painted out of this container?

Answer 1

Answer: 3bricks

Step-by-step explanation:The brick is cuboidel in shape

:. Total surface area of 1 brick =

2(lb+bh + lh)

But length=l=11.5 cm

Breadth=b=10 cm

Height=h=6cm

:.Total surface area of brick=

2(11.5*10+10*6+6*11.5)

=2(115+60+69)

=2(244)

=488 sq.cm

The paint can paint 14.64 m.sq

:. 14.64 m.sq=1464 sq.cm

:. No. Of brick painted=1464/488

=3

:. 3bricks can be painted

Answer 2

Answer:

300 bricks can be painted out of this container.

Step-by-step explanation:

Surface area of the bricks = 2(lh + bh + lb)

= 2(11.5 × 10 + 10 × 6 + 11.5 × 6)

= 2 × 244

= 488 cm²

1 m² = 10000 cm²

14.64 m² = 146400 cm²

Number of bricks that can be painted =

$\frac{146400}{488}$

= 300 bricks

Therefore,

300 bricks can be painted out of this container