questions A and B?

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A. a triangle and a parallelogram of the same altitude have the same areas. how do their bases compare.

B. ratio of circumferences of two circles is 3:5. find the ratio of their areas.

2006-09-04 02:35:41 · 2 answers · asked by Anonymous in Education & Reference ➔ Primary & Secondary Education

2 answers

B. 9:25

2006-09-04 02:40:47 · answer #1 · answered by Goddess of Grammar 7 · 0⤊ 0⤋

A. Altitude is the same as height. The formula for the area of the triangle is A=0.5bh, while the area of the parallelogram is A=bh. You can do the math from there, as everything bu the base is constant.

B. Circumference is 2*pi*radius. So find the radius for each circle. Then plug each radius into the area formula (A=pi*radius^2) to get their areas. That will give you the ratio.

2006-09-04 14:16:03 · answer #2 · answered by Anonymous · 0⤊ 0⤋