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Mathematics 15 Online
OpenStudy (anonymous):

I'm stuck! A park in a subdivision is triangular-shaped. Two adjacent sides of the park are 573 feet and 536 feet. The angle between the sides is 58o. To the nearest unit, find the area of the park in square yards

jimthompson5910 (jim_thompson5910):

given this triangle |dw:1370920187718:dw|

jimthompson5910 (jim_thompson5910):

the area is A = (1/2)*b*c*sin(x)

OpenStudy (anonymous):

i got 152469.49

OpenStudy (anonymous):

A. 14,470 yd2 B. 28,940 yd2 C. 32,557 yd2 D. 43,410 yd2 but these are the choices

jimthompson5910 (jim_thompson5910):

how did you get 152469.49?

jimthompson5910 (jim_thompson5910):

oh i see, you need to make sure you're in degree mode (not radian mode)

OpenStudy (anonymous):

lol (1/2)573*536*sin(58)

jimthompson5910 (jim_thompson5910):

and for some strange reason the initial units are in feet...but they want the answer in square yards (not square feet)

jimthompson5910 (jim_thompson5910):

switch over to degree mode

OpenStudy (anonymous):

in degree mode i got 130229

OpenStudy (anonymous):

so about 43 sq yards

jimthompson5910 (jim_thompson5910):

good, I'm getting 130,229 as well then you divide by 9 (since 1 sq yard = 9 sq ft) to convert to square yards

OpenStudy (anonymous):

thank you!!

jimthompson5910 (jim_thompson5910):

you're welcome

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