Question 353289
{{{D = 1.2sqrt(h)}}}
To "solve for h" means transformt he equation so that h, just plain old h, is by itself on one side of the equation. In your equation, this means the 1.2 and the radical need to "go away". We can make the 1.2 disappear by dividing both sides of the equation be 1.2:
{{{D/1.2 = sqrt(h)}}}
And we can make the radical go away by squaring both sides of the equation:
{{{(D/1.2)^2 = (sqrt(h))^2}}}
{{{D^2/1.44 = abs(h)}}}
Because h cannot be negative, we do not need the absolute value:
{{{D^2/1.44 = h}}}
We now have h by itself on one side of the equation. We have solved for h.<br>
For the second part, just use the original equation
{{{D = 1.2sqrt(h)}}}
put 14255 in for h:
{{{D = 1.2sqrt(14255)}}}
and use your calculator to find D.