Question

The swimming pool at Spring Valley High School is a rectangle with a width of 75 meters and a length of 25 meters. Around the perimeter of the pool is a tiled floor that extends w meters from the pool on all sides. Find an expression for the area of the tiled floor.
Group of answer choices

(8w2 + 125w + 925) m2

(4w2 + 200w + 1875) m2

(2w2 + 100w) m2

(4w2 + 200w) m2

Answer 1

total=(2w+75)(2w+35)=4w²+220w+2625

pool=75 times 35=2625

minus pool from total
4w²+220w+2625-2625=4w²+220w

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Answer 2

same as before

total=(2w+75)(2w+35)=4w²+220w+2625

pool=75 times 35=2625

minus pool from total
4w²+220w+2625-2625=4w²+220w