379.94 rounded to the nearest tenth is = 379.9
Answer:
h = 19.7 ft.
Step-by-step explanation:
Use the Pythagoras Theorem

Now we take square root on both sides,

so the value of h equals 19.7 ft.
Answer:
70 hours
Step-by-step explanation:
3500 by 50 is 70
let y = x^2
4y^2 -21y + 20 = 0
solve for y
then substitute back in to get x
We know that,
diameter is twice the radius, I.e d = 2r
Now d = 2(8)ft = 16 feet