The answer is 387.71
Formula: pi * r (r + (square root of h^2 + r^2) )
Plug in and solve.
Answer:
Step-by-step explanation:
Let the number of hours driven by Maggie be x and that of Alan be y
If Maggie and Alan drive for a total of 32 hours, then;
x+y = 32 ..... 1
Also if Maggie drives three times the number of hours that Alan drives on their vacation, then x = 3y ...... 2
Substitute eqn 2 into 1;
x+y = 32
3y+y = 32
4y = 32
y = 32/4
y = 8 hours
Since x = 3x
x = 3(8)
x = 24 hours
Hence Maggie drives for 24 hours and Alan drives for 8 hours
7 meets those requirements- 7<10, its prime, 7^2=49 which is >40 but <80
