Question

a beam 9m long , 50cmwide and 20 cm depth is made of which weight 30kgperm^3 find the weight of the beam

Answer 1

$\huge\boxed{\texttt{\fcolorbox{Red}{aqua}{Hello Friend}}}$

Here is your answer

l = 9m
b = 50cm =50/100 m. = 0.5 m
H = 20cm. =20/100m = 0.2m

Volume of beam = l x b x h
$= 9 \times 0.5 \times 0.2 \\ = 0.9 \: m \: {}^{3}$
Now the cost of the beam = 0.9 x 30

= 27 Kg

Hope it helps you

Answer 2

Here's ur answer.....

Hope it helps you.....