Answer:
50.24
Step-by-step explanation:
You will do
(area of a circle) x (hight)
Area of a circle = A
lets say 3.14 is pi
A = 3.14 x 2^2
A = 3.14 x 4
A = 12.56
Now
V = 12.56 x 4
V = 50.24
Let x be the time she ran and y be the time she walked
then distance ran = 25x and distance walked = 5y
so 15x + 5y = 42
and x + y = 4
* second equn. by -5:-
-5x - 5y = -20
add this to the first equn:0
10x = 22
x = 2.2
distance she ran = 2.2 * 15 = 33 km
Answer:
Step-by-step explanation:
Im pretty sure 20 is the anwser
