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A trapezoid has parallel sides of lengths 10 and 15; its two other sides have lengths 3 and 4. Find the area.

 Nov 9, 2019
 #1
avatar+19937 
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Try here (and see explanation of equation in lower R)

 

https://owlcalculator.com/Geometry/Area/Trapezoid-Area/By-lateral-sides-and-bases

 Nov 9, 2019
 #2
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what is the formula

 

the site is blocked on my computer I really want to know it.

CalculatorUser  Nov 9, 2019
 #3
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Here are a couple of screenshots....I doubt it is a formula anyone would want to commit to memory ~

Guest Nov 9, 2019
 #4
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a = 3

b (short base) = 10

c = 4

d (long base) = 15

 

 

A = 53.13010

B = 126.86990

C = 143.13010

D = 36.86990

h = 2.40000

area = 30.00000

diagonal AC = 13.41641

diagonal BD = 12.04159

 Nov 9, 2019

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