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Colt1911 [192]
3 years ago
10

PLEASE HELP! I REALLY NEED THIS ANSWERED!!!

Mathematics
1 answer:
expeople1 [14]3 years ago
4 0

Answer:

  = 30mn^4

Step-by-step explanation:

The area of a trapezoid

A = 1/2 (a+b) *h

where a and b are the top and bottom

A = 1/2( 3mn^2+ 9mn^2) * 5n^2

Combine like terms

A = 1/2(12mn^2) * 5n^2

  =6mn^2 * 5n^2

  = 30mn^4

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