Question

*How much does it cost to paint a cuboidal wooden box of 2 m length, 1 m width and 1 m height at the rate of Rs 40 per sqm.?*​

Answer 1

${\huge{\boxed{\sf{\green{❥✰Question✰}}}}}$

How much does it cost to paint a cuboidal wooden box of 2 m length, 1 m width and 1 m height at the rate of Rs 40 per sqm.?*​

${\huge{\underline{\bf{\pink{❥✰➵ANSWER :-✰}}}}}$

Given

Length=2m

Width=1m

height=1m

cost=Rs.40perm

2

To find:- cost of painting wooden box.

${\mathfrak {\underline{\dag {Let's \:do \:it\:!}}}}$

$\sf\star{\boxed{\pink{TSA \:of \:wooden\: box=2(l×b+b×h+l×h)}}}⋆$

where l is length of box b is the breadth that is width of box and h is the height of box.

$\begin{gathered} \sf \implies {2(2×1+1×1+2×1) m^2} \\ \sf \implies {2(2+1+2)m^2} \\ \sf \implies{2(5)m^2} \\ \sf \implies {\boxed {\pink{10\:m^2}}}\end{gathered} ⟹2(2×1+1×1+2×1)m 2 ⟹2(2+1+2)m 2 ⟹2(5)m 2 ⟹ 10m 2$

$cost per \sf m^2m 2 =Rs.40cost for \sf 10 \:m^210m 2 =Rs.40×10=Rs.400\odot⊙$

Hence the Answer is  Rs 400