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anonymous
 one year ago
What is the area of the equilateral triangle? Round to the nearest square centimeter.
cm2
http://static.k12.com/calms_media/media/1579000_1579500/1579374/1/2d11bb360066673f6944e7b48c887fd772b22a4f/MS_IMC150126130913.jpg
anonymous
 one year ago
What is the area of the equilateral triangle? Round to the nearest square centimeter. cm2 http://static.k12.com/calms_media/media/1579000_1579500/1579374/1/2d11bb360066673f6944e7b48c887fd772b22a4f/MS_IMC150126130913.jpg

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@hartnn @Michele_Laino @inowalst @radar @welshfella

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1there's various ways to find this area you could use A = 0.5*ab*sin C

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1dw:1432752636786:dw

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1here a = b = 8 and C = 60 degrees

anonymous
 one year ago
Best ResponseYou've already chosen the best response.08^2 and 60^ 2 right?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.10.5 * 64 = half of 64 = ?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1do you know what sin 60 degrees is  Have you done any trigonometry?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1oh OK Then we need another method

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1dw:1432753016497:dw

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1x is the height of the triangle the area = 1/2 * base * height = 4 * height Now we need to find the value of x Have you come across the Pythagoras Theorem?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1so we can find x by using that theorem: 8^2 = 4^2 + x^2 x^2 = 8^2  4^2 can you continue to find x?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1now its 64  16 = x^2

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1x^2 = 48 x = sqrt 48

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1x^2 = 48 but to find x you need to find the square root of 48 ur calculator will give you that

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1yes so area = 4 * 6.9

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1more accurately its 6.93 so area = 4 * 6.93

welshfella
 one year ago
Best ResponseYou've already chosen the best response.127.7 is more accurate

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0it wont let me put in a decimal
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