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Somebody please help me with 7 and 8 and 9 this my last 10 points

Somebody Please Help Me With 7 And 8 And 9 This My Last 10 Points class=

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Answer:

7) 120

8) 84

9) 240

Step-by-step explanation:

7) A= bh

A= (40)(30)= 120

8) A= (d1 x d2)/2

A= (14 x 12)/2

A= 84

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

A= 1/2(24 + 16) (12)

A= 240

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