A radio station sends out waves in all directions. The range has a diameter of 196 miles. How large is area?

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2007-06-15 08:27:38 · 2 answers · asked by Dale 1 in Science & Mathematics ➔ Mathematics

Assuming ground coverage.

d=196, so r=98.

A = pi*r*r = 98*98*pi = 30,172 square miles

2007-06-15 08:32:02 · answer #1 · answered by jjsocrates 4 · 1⤊ 0⤋

radius = 98 miles
A = Ï x 98Â² milesÂ²
A = 30172 milesÂ² (to nearest mileÂ²)

2007-06-16 06:04:43 · answer #2 · answered by Como 7 · 0⤊ 0⤋