hey can someone tell me how to find the are of a trapezoid and a circle please?
=] thnakss. and im sorta a blonde so dony use * i dont know what they mean just use X for multiple and for divide use /
love,
sexii lexiii ♥
2007-09-04 05:33:25 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Trapezium :-
Parallel sides a and b
Height h
A = (1/2) (h) (a + b)
Circle
radius r
A = π r ²
2007-09-07 21:30:28 · answer #1 · answered by Como 7 · 1⤊ 0⤋
To find the area of a trapezoid, take the sum of its bases, multiply the sum by the height of the trapezoid, and then divide the result by 2.
A = (Base x Height)/2
To find the area of a circle, you take first need to know the radius (the distance from the center of the circle to any point on the circle), square that (or multiply it twice) and multiply it by the constant Pi (~3.14)
A = Pi x radius^2 OR A = Pi x radius x radius
2007-09-04 12:44:05 · answer #2 · answered by Anonymous · 0⤊ 0⤋
To find the area of a trapezoid, take the sum of its bases, multiply the sum by the height of the trapezoid, and then divide the result by 2
and the circle is pi*r^2
2007-09-04 12:42:17 · answer #3 · answered by waterboy15625 2 · 0⤊ 0⤋
circle A=TT x radius squared
Trapezoid: 1/2 h (B1 + B2) where h= height and B=base lengths
2007-09-04 12:42:07 · answer #4 · answered by davidosterberg1 6 · 0⤊ 0⤋