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5. A groundskeeper needs grass seed to cover a circular field, 320 feet in diameter. A store sells 60-pound bags of grass seed. One pound of grass seed covers about 600 square feet o field. What is the smallest number of bags the groundskeeper must buy to cover the circular field? Explain or show your reasoning,​

Respuesta :

Answer:

165

Step-by-step explanation:

First we need to find the area of the field, A = r^2 * pi

The radius is 290 / 2 = 145 feet

A = 145 * 145 * 3.14 = 66018.5 sqr feet

One bag covers 400 sqr feet

Divide the Area by 400 sqr feet to find number of bags needed.

66018.5 / 400 = 165

He will need at least 165 bags to cover the field

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