An impact crater left by an asteroid has a radius of 85 km. What is the area of the center?

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An impact crater left by an asteroid has a radius of 85 km. What is the area of the center?

2007-03-01 10:03:46 · 3 answers · asked by Judith W 2 in Science & Mathematics ➔ Earth Sciences & Geology

3 answers

Assume that the impact crater is circular
For a circle
Area = pi * r^2

2007-03-01 10:08:18 · answer #1 · answered by dogsafire 7 · 1⤊ 0⤋

The area of the crater is pi multiplied by the radius squared.

Pi ha a fixed value - 3.141592. So you need to multiply 3.141592 by (85 x 85) = 22698 sqaure kilometres.

Your question asks what is the area at the center - the center has no area as it's just a single point, I assume you meant what is the area of the circle.

2007-03-01 18:13:13 · answer #2 · answered by Trevor 7 · 1⤊ 0⤋

pi * the radius squared. so 85 squared equals 7225. then multiply by pi. TADA!!!

2007-03-01 18:10:36 · answer #3 · answered by Al 2 · 1⤊ 0⤋