7. A circular hot spring has a diameter of 110 meters. Over time, the diameter
es of the spring decreases by 3 meters. By how many square meters does the
area of the hot spring decrease?

the  area of the hot spring decrease .

Explanation:

Here we have  A circular hot spring has a diameter of 110 meters. Over time, the diameter  of the spring decreases by 3 meters. We need to calculate  , how many square meters does the  area of the hot spring decrease:

Area of circular hot spring initially =

⇒ Area of circular hot spring initially =

⇒ Area of circular hot spring initially =

⇒ Area of circular hot spring initially =

Over time, the diameter  of the spring decreases by 3 meters. Now,

Area =

Area =

Decrease in area :

⇒

⇒

∴ the  area of the hot spring decrease .

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