Practice GED Math Question | Geometry | Area

Mr. Tress built a new home and is currently planning on seeding his back yard with a new hybrid grass seed that costs $45 a bag.  The direction say that each bag will cover 495 square feet of grass.  By the way each bag contains 4 pounds.  The dimensions of the back yard is 100 yards in length and 40 yards in width.

Mr. Tress is also putting in a wonderful circular pool with a diameter of 20 feet.

Given the dimensions of the yard and pool, how many bags of grass seed will be needed and what will be the approximate cost for the grass seed?

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Answer:  About 72 bags of grass seed  Cost :  $3240

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