Length 9 meters, width 30 centimeters, ask a person to help calculate how many square meters?
30 cm = 0.3 M
9 × 0.3 = 2.7 square meters
30 cm * 30 cm square, a total of 50 pieces, how many square meters, how to calculate
=30*30*50=45000cm^2=4.5m^2
How to calculate square, 75 cm long and 34 cm wide. How to calculate
It's area. Area is length times width: 75x34 = 2550 square centimeter