Answer:
depth of swimming pool = 2.4 meters
Step-by-step explanation:
Volume of the swimming pool = l x b x h = 3000
Volume of the swimming pool = 50 x 25 x h = 3000
h = 2.4 meters
Answer:
0-3=-3
Step-by-step explanation:
All square sides are equal so 20 x 20 is 400 and to get the area of a circle is pi x radius squared so the answer is C
Answer:
The density would be 2.89 g/ml
Step-by-step explanation:
To find this, we first need to find the mass of the rock. we can do this by subtracting the weight of the water and cylinder from the weight after the rock is added.
250g - 120g = 130g
Now we need to find the volume. To get this, we subtract the volume of the water before and after the rock is added.
75ml - 30ml - 45ml
Now we use the density formula and solve
D = m/v
D = 130g/45ml
D = 2.89 g/ml
Coefficient of variation CV =std/mean *100%
CV = 3/25 *100%
Cv = 12%