Question

Find the surface area of $10cm\times 4cm\times 3cm$ brick.

• A. $84$ sq. cm
• B. $124$ sq. cm
• C. $164$ sq. cm
• D. $180$ sq. cm

Answer 1

The correct option is C $164$ sq. cm

We know that the surface area of a cuboid is

$2(lb+bh+hl)$

Here $l=10$

$b=4$

$h=3$

Therefore,

Surface area =. $2(10\times 4+4\times 3+3\times 10)$

=. $2(40+12+30)$

=. $2\times 82$

=$164$sq.cm

Ans: $164$sq.cm