Help please???????????

Question

what is Geometric facts?

Answer 1

A rectangle: Perimeter equals two times the length plus two times the width; Area equals the length times the width.

P = 2L + 2W

A = LW

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A square: Perimeter equals four times the side; Area equals the side squared.

P = 4S

A = S2

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A circle: Diameter equals two times the radius; Radius equals diameter divided by two; Circumference equals pi times diameter or two times the radius times pi. Area is pi times the square of the radius.

(pi equals approximately 3.14)

d = 2r ; r = d/2

C = 3.14d ; C = (2)(3.14)r

A = 3.14r2

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A triangle: Perimeter equals the sum of the three sides. Area equals one half the base times the height.

P = S1 + S2 + S3

A = (1/2)bh