We can dig out the soil from the well equal to volume of well.
Height(h) of well is = 15 meters.
Diameter = 1.6 meters.
So radius(r) =

meter.
As well in cylindrical shapes.
So volume of well =

=

In general

So volume of well is =

cubic meter.
So we can dig out 30.144 cubic meter soil from well.
19^2 = 361
7^2 = 49
361 - 49 = 312
Square root of 312 = 17.66
B) 17.7
Answer:
I wanna say it is D.
Step-by-step explanation:
We are given some statements, we need to find which of the given statements is an advantage to using equations.
<h3><em>The correct option is </em></h3><h3><em>(A). When given two names for the same quantity, you can use algebra to solve the equations.</em></h3>
Incorrect options are :
(B). You can forget what an equation represents when it is used by itself.
(C). every problem needs an equations if you want to solve it.
Answer:
see the pic for the answers