It is a simple 'difference' formula.
Altitude at 'a' altitude at 'b'
Take 'a' from 'b' = displacement.
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It is used, except that, because one set of coordinates are the same, the formula collapses into a simpler form.
7.019KM ON A BEARING OF 0.989 DEGrEES
formula of find the volume of dish
well, an oval is a curved shape like the circle, so we use the same basic principle of πr² (or pi multiplied by (radius squared)). however, unlike the circle, the oval as two differing radii (plural of radius!) so we have to take that into account and adjust our formula accordingly. so the formula instead of squaring one radius, we measure both radii (horizontal radius * vertical radius) an then we multiply that by pi. the simple form of the formula is: π*(r1*r2) r1= horizontal radius r2= vertical radius π is the symbol for pi hope that helps!
The formula depends on the information available to you.