How many circle with radius of 5 can be cut out from a cartolina 45 cm and 38 cm

formula: Area of the cartolina / area of the circle : [(45cm)(38cm)] / [(3.14)(5cm)(5cm)] : (1710cm^2) / (78.5cm^2) : 21.78therefore, there are 21 circle that can fit in a 45cm by 38cm cartolina :)