The radius of a circle is 2.4 cm, the circumference of the circle is () cm, and the area is () square cm

The radius of a circle is 2.4 cm, the circumference of the circle is () cm, and the area is () square cm

4.8 π is about 16.39484

The circumference of a circle is 125.6cm, and its area is () square centimeter. The radius of a semicircle is 3cm, and its area is () square centimeter
The circumference of a circle is 125.6 cm, and its area is () square cm
The radius of a semicircle is 3cm, and its area is () square centimeter
Among the four numbers of 0.85, 7 / 8, 85.1% and 5 / 6, the largest one is () and the smallest one is
For a 10 meter long rope, one fifth of it is cut off for the first time, and one fifth of it is cut off for the second time, leaving () meters
For a project, it takes 12 days for Party A to do it alone and 15 days for Party B to do it alone. Four days after the two teams work together, there is still () of the project left

The circumference of a circle is 125.6 cm, and its area is (1256) square cm. The radius of a semicircle is 3 cm, and its area is (14.13) square cm