Question 21
The big square in the figure is made up of 4 rectangles and 1 small square. The lengths and the breadths of 2 rectangles are given in the picture. Find the perimeter (in cm) of the big square.
Answer format: enter the whole-number answer without units. Leading zeros are optional (the original paper uses four-digit answer boxes).
Answer format: enter the whole-number answer without units. Leading zeros are optional (the original paper uses four-digit answer boxes).