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34kurt
2 years ago
12

Find area of shaded regions​

Mathematics
1 answer:
vagabundo [1.1K]2 years ago
5 0

Answer:

1039.5 cm²

Step-by-step explanation:

Area (shaded) = 22/7 x 21 x 21 - 22/7 x 21/2 x 21/2

= 1386 - 346.5

= 1039.5 cm²

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Hi there!

The correct answer for you is 270.88.

To round to the hundreth's place (.0<u>1</u><u />), you need to take the number in the thousand's place (.00<u>1</u>), and determine if the number needs to go up or down.

If the number in the thousand's place is <u>greater</u> than 4, then the number goes up.

360.72<u>7</u> --> This means that the hundreth's number goes up to 3.

If the number in the thousand's place is <u>lesser</u> than 5, then that number stays the same.

89.85<u>2</u> --> This means that the hundreth's number stays the same.

After you round, then just subtract:

360.73 - 89.85 = 270.88.

I hope this helps!
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3 years ago
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