How to calculate the area of ??a tape 3cm wide and 200m long? How to calculate the area of ??a circle and the area of ??a rectangle?

Calculate the area of ??a 3cm wide and 200m long tape

200m=20000cm

3*20000=60000(cm^2)=6(m^ 2)

The area of ??the circle: r^2*3.14

The area of ??the rectangle: length*width