Answer:
1715= 1/3 x 3.14 x r x r x 63
= 65.94 x r^2
÷65.94
26.01 = r^2
Square root
Radius is 5.1
1080 = 1/3 x 3.14 x 5.1^2 x h
1080 = 27.22 x h
÷27.22
39.67 = h
(Haven't been actually rounding up in my calculation, when I divided.)
Check:
1/3 x 5.1^2 x 39.67 x 3.14 = 1079.968146.
So, height is about 39.67cm
Hope this helps!
Answer:
3:25 pm
Step-by-step explanation:
The distance between New Orleans and Houston is : 353 miles
Departure time of the bus : 12:20 pm
Speed of the bus: 60 mph
After 45 minutes, the bus will be at a distance of : 45/60 * 60 = 45 miles
Distance remaining to cover = 353-45 = 308 miles
Speed of the motorcycle = 72 mph
Relative speed = 60 + 72 = 132 mph
Time the two will meet = 308 / 132 = 7/3 hrs
7/3 hrs = 2 hrs 20 minutes
Time the two will meet is ;
12:20 pm + 45 minutes + 2 hrs 20 minutes
= 3:25 pm
From the point-slope formula, we have:
where m is the slope, (x_0,y_0) are known points.
In this case, we have the slope and two points, we can substitute in the formula to get:
therefore, a=3
Note: you can also find a if you use the slope formula.
The value is closest to 2,852 as the decimal value is less than .5