the correct question is
What is the perimeter of a rectangle that is 2m 10cm by 45cm?
we know that
The perimeter of a rectangle is equal to
\(P= 2L+2W\)
where
L is the length of the rectangle
W is the width of the rectangle
In this problem we have
\(L=2\ m\ 10\ cm = 200\ cm+10\ cm=210 \ cm \\ W=45\ cm\)
substitute the values in the formula
\(P= 2*210+2*45\)
\(P= 420+90\)
\(P= 510 \ cm\)
therefore
the answer is
The perimeter is equal to \(510 \ cm\)
