Tank walls must be at least 1 foot tall so the turtle can't climb out. there must be 400 square inches of floor space for the turtle to walk around on the volume of the tank must be smaller than 5000 cubic inches .need the dimensions

figure c

step-by-step explanation:

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80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh