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Mathematics 22 Online
OpenStudy (anonymous):

Anyone good at geometry? please Giving medals.

OpenStudy (anonymous):

Finding the area of a trapezoid

OpenStudy (anonymous):

OpenStudy (anonymous):

Find the area of the trapezoid. 182.5 in2 307.5 in2 615 in2 365 in2

OpenStudy (anonymous):

@amistre64

OpenStudy (amistre64):

average the top and bottom, then multiply it by the height

OpenStudy (amistre64):

12.5 * (29.2+10)/2

OpenStudy (amistre64):

*+20 ... not 10

OpenStudy (anonymous):

307.5?

OpenStudy (anonymous):

squared?

OpenStudy (amistre64):

307.5 is the correct value ... the units for area are ^2 that doesnt mean that you square the results tho

OpenStudy (amistre64):

inches^2 yes

OpenStudy (anonymous):

Awesome. Thank you mam.

OpenStudy (anonymous):

Can you help me with one more this one makes no sense to me it doesnt involve numbers.

OpenStudy (amistre64):

youre welcome

OpenStudy (amistre64):

i can try

OpenStudy (anonymous):

thanks

OpenStudy (anonymous):

OpenStudy (amistre64):

assume a radius of 1, or 10, or any of your favorite numbers ... the ratio of areas will be the same

OpenStudy (amistre64):

say radius = 1 whats the area of a circle with a radius of 1?

OpenStudy (anonymous):

diameter is 2 so 2 * 360?

OpenStudy (amistre64):

lets go with pi r^2 .... so pi the square has a side of sqrt(2) ... so its area is sqrt(2) * sqrt(2) = 2

OpenStudy (anonymous):

okay.

OpenStudy (amistre64):

2/pi is the probability of getting a shady spot

OpenStudy (amistre64):

thats about 2/3 so about 66?

OpenStudy (anonymous):

so about 65%?

OpenStudy (amistre64):

yep

OpenStudy (anonymous):

okay awesome thanks you again.

OpenStudy (anonymous):

thank*

OpenStudy (amistre64):

good luck

OpenStudy (anonymous):

Ill need it. haha

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