Answer: 43 cm
Explanation:
The perimeter of rectangle is given by :-
, where l is length and w is width of the rectangle.
Given : The length of rectangle is 17.5 cm and the width is 40 mm in cm.
Since , 1 cm = 10 mm
Then, 40 mm=

Then, the perimeter of rectangle will be :-

Hence, the perimeter of rectangle = 43 cm