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i need help ASAP!!!!! this is graded and plzzzzz no links!!!!!!!!

I Need Help ASAP This Is Graded And Plzzzzz No Links class=

Sagot :

Answer:

The formula of a trapezoid is:

B1(base 1) + B2(base 2) x H(height) x 1/2 (basically just dividing by 2)

In this case 9 and 3 are your bases so add them together to get 12.

Now we multiply 12 to the height! 12 x 3(height) = 36. Now we multiply 36 to 1/2 which is just dividing by 2, so 36 divided by 2 = 18