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VARVARA [1.3K]
2 years ago
14

Please help! Will mark brainless​

Mathematics
2 answers:
KengaRu [80]2 years ago
4 0
Here’s what you can do to make this very simple. Consider that the “missing” space between the rectangles isn’t there. Then, find the area:

10 x 9 = 90 mm

Now, find the area of the “missing” part.

5 x 2 = 10 mm

Finally, you deduct the missing part from the complete rectangle!

90 - 10 = 80 mm

The area of this whole thing is 80 mm!

HACTEHA [7]2 years ago
4 0

Answer:

A_{total} = 80\ mm^2

Step-by-step explanation:

<u>Step 1:  Determine the area of the bottom rectangle</u>

A = l * w

A = (9\ mm) * (10\ mm - 5\ mm)

A = 9\ mm * 5\ mm

A = 45\ mm^2

<u>Step 2:  Determine the area of the top rectangle</u>

A = l * w

A = (9\ mm - 2\ mm) * (5\ mm)

A = 7\ mm * 5\ mm

A = 35\ mm^2

<u>Step 3:  Determine the total area</u>

A_{total} = 45\ mm^2 + 35\ mm^2

A_{total} = 80\ mm^2

Answer: A_{total} = 80\ mm^2

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