IL. RU in the blanks Swiss
6._ is the amount of surface of the plane covered by a closed figure
7 Area of a triangle
8. A chord that pass through the centre of the circle is
9. The space between the bars must have the same
10.
is defined to be that number which occurs most frequently in a given data​

i leave the calculator work to you.

7. diameter 4 miles, circumference 4π miles

8. radius 0.2 miles, circumference 0.4π miles

[this is a bad problem because the actual radius of a car on the track is less than 0.2 miles so the answer is less than 0.4π miles]

9. radius 6 feet, circumference 12π feet

10. diameter 14 cm, circumference 14π cm

11. diameter 4.8 feet, circumference 4.8π feet

an altitude of 15,000 feet

step-by-step explanation: