4 years ago

PLEASE HELP! I REALLY NEED THIS ANSWERED!!!

Mathematics

1 answer:

expeople1 [14]4 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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