Asked by Enyew

An arch is in the form of a semi ellipse.it is 50m wide at the base and has ahight of 20m.how wide is the arch at the height of 10m above the base?
Answered by Steve
since a=25 and b=20, the ellipse can be represented by

x^2/25^2 + y^2/20^2 = 1

Now just find 2x when y=10.
Answered by Anonymous
25
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