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Q: A trapizoid has bases of 7 cm and 5 cm and the height of 3 cm what is the area?
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What is the unknown base of a trapizoid if the area equals 21 the second base equals 5 and the height equals 2cm?

It is: 16 cm.


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A trapezoid has an area of 45 cm2 The two bases are 6 cm and 12 cm What is the height of the trapezoid?

The area of a trapezoid is equal to one half the product of the length of its height and the sum of its bases. So we have: A = (1/2)(h)(B + b) substitute what you know into the formula 45 cm^2 = (1/2)(h)(12 cm + 6 cm) 45 cm^2 = (1/2)(h)(18 cm) 45 cm^2 = (h)(9 cm) divide by 9 cm to both sides 5 cm = h Thus, the height is 5 cm.


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