Help me please !!? The frequency table for daily sales of 100 a sale unit is given below:
daily sales
10 - 19
20 - 29
30 – 39
40 - 49
50 - 59
60 - 70

No. sale unit
4
15
27
26
18
10

a) Construct a histogram, polygon of daily sales
b) Describe the shape of the frequency distribution.
c) Draw an ogive of daily sales, and use it to estimate, the median.
e) Estimate the following statistical measures
1. Mean
2. Median
3. Mode
4. Range
5. 15th percentile
6. Interquartile Range
7. Variance
8. Standard deviation
9. Coefficient of variation

For every corresponding pair of cross sections, the area of the cross section of a sphere with radius r is equal to the area of the cross section of a cylinder with radius and height 2r minus the volume of two cones, each with a radius and height of r. a cross section of the sphere is and a cross section of the cylinder minus the cones, taken parallel to the base of cylinder, is the volume of the cylinder with radius r and height 2r is and the volume of each cone with radius r and height r is 1/3 pie r^3. so the volume of the cylinder minus the two cones is therefore, the volume of the cylinder is 4/3pie r^3 by cavalieri's principle. (fill in options are: r/2- r- 2r- an annulus- a circle -1/3pier^3- 2/3pier^3- 4/3pier^3- 5/3pier^3- 2pier^3- 4pier^3)