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anonymous
 one year ago
help!
anonymous
 one year ago
help!

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So we know that the top side of the rectangle is 3, which also means the bottom side of the rectangle is also 3.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The total length of the bottom side is 5. We just said that the bottom side of the rectangle is 3. So 5  3 = 2. 2 is the bottom length of the triangle

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok i figured that out,

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Did you know that this is a trapezoid. Area of a trapezoid is calculated by this formula: \[A = (\frac{ b _{1} + b _{2}}{ 2 }) * h\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1433123388597:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0That other drawing had a mistake. The above one is correct.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0To find the other leg of the triangle, use the Pythagorean Theorem. \[c ^{2} = a ^{2} + b ^{2}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0well the Pythagorean theorem can be used.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes i figured out the answer it's the square root of 45.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0You said square root of 45, which is correct.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay so we found all the necessary lengths. Now we have to calculate using the formula for area of a trapezoid

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay so Base 1 = 3 and Base 2 = 5, the total bottom length of the trapezoid

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Find the average between the 2 bases. 3 + 5 = 8. 8/2 = 4 Average is 4. Then multiply this number by the height which is the square root of 45

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[A = 4\sqrt{45}\] which is \[A = 4 * (\sqrt{9} * \sqrt{5})\] which is \[A = 4 * (3\sqrt{5})\] which is simplified to \[A = 12\sqrt{5}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Rounded to the nearest tenth would be 26.8
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