An engineer wants to double the water supply reserve and makes a tank 1.26 times as big as the old one in linear dimension, and the diameter of the legs is 1.41 times as large. Is this big enough?

Yes, it would be enough.

Explanation:

The volume of the tank (cylinder tank) is given by the following equation:

Where:

D is the diameter of the tank

h is the height of the tank

Now, the engineer makes a tank 1.26 times as big in heigh and 1.41 times as large with respect to diameter, then the new volume of this tank will be:

in terms of the initial volume:

Which means that the volume of the water could be doubled.

I hope it helps you!

answer; equivalent to a one(1) horsepower motor;

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s