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anonymous
 one year ago
The area of triangle ABC is 31 1/4 square centimeters. What is the measure of side b?
anonymous
 one year ago
The area of triangle ABC is 31 1/4 square centimeters. What is the measure of side b?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1434633793806:dw

Sachintha
 one year ago
Best ResponseYou've already chosen the best response.0dw:1434633890402:dw First we need to find h.

Sachintha
 one year ago
Best ResponseYou've already chosen the best response.0\[Area\ of\ a\ triangle=\frac{1}{2}*base *height\]

Sachintha
 one year ago
Best ResponseYou've already chosen the best response.0We already know the base and area. So calculate h.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0How do I find the height? @sachintha

Sachintha
 one year ago
Best ResponseYou've already chosen the best response.0\[31.25 cm^2 = \frac{1}{2}*12.5*h\]

Sachintha
 one year ago
Best ResponseYou've already chosen the best response.0Can you calculate now?

Sachintha
 one year ago
Best ResponseYou've already chosen the best response.0\[h=\frac{31.25*2}{12.5}\] \[h=5\]

Sachintha
 one year ago
Best ResponseYou've already chosen the best response.0You can find b using trigonometry. \[sin\ 45^0=\frac{h}{b}\]

Sachintha
 one year ago
Best ResponseYou've already chosen the best response.0\[sin\ 45^0=\frac{1}{\sqrt2}\]
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