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People's Education Edition 20 15 How to do the fourth question on page 43 of Spring Primary School Mathematics Volume 10?
This problem needs to focus on which areas need to be pasted with external finishes.

I just want the upper and lower floors on all sides, and the upper and lower floors of the trash can don't need to be pasted.

Upper lateral area: 66×20×4=5280 (square centimeter).

Transverse area of the lower floor: 46×80×4= 14720 (square centimeter).

Decoration required for 25 garbage cans: (5280+ 14720)×25=500000 (square centimeter)

500,000 square centimeters =50 square meters

Money to be spent: 180×50=9000 yuan.

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