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19 votes
I kinda need help : /

I kinda need help : /-example-1
User Xavier Holt
by
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1 Answer

19 votes
19 votes

Answer:

24 square units

Explanation:

There are a couple of ways you can figure the area of the frame:

  1. subtract the inner area from the outer area
  2. multiply the width of the frame by the length of its centerline

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Subtract

The dimensions of the outer rectangle are twice the frame width plus the dimensions of the inner rectangle. That makes them 8 wide by 6 high. Then the difference of areas is ...

A = (8)(6) -(6)(4) = 48 -24 = 24 . . . . square units frame area

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Width by Length

The centerline of the frame is a rectangle with 1 unit greater length and width than the inner rectangle. It is 7 units by 5 units, so will have a perimeter of ...

P = 2(L+W) = 2(7+5) = 24 . . . . units

Then the area of the frame is this length multiplied by the width of the frame:

A = (24)(1) = 24 . . . . square units frame area

User Gabriel Llorico
by
2.1k points