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fenix001 [56]
3 years ago
7

Roberta jogs 3 laps the first day, 5 laps the second day, 7 laps the third, and so on. On which day will Roberta jog 13 laps if

the pattern continues.
Mathematics
1 answer:
-BARSIC- [3]3 years ago
5 0

It seems that she runs two more laps each day, so:

day 1- 3

day 2- 5

day 3- 7

day 4- 9

day 5- 11

day 6- 13

simple patterns baby

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Two semicircles are attached to the sides of a rectangle as shown.
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Answer:

157\ in^{2}

Step-by-step explanation:

we know that

The area of the figure is equal to the area of rectangle plus the area of two semicircles

<u>The area of rectangle is equal to</u>

A=14*5=70\ in^{2}

<u>The area of the small semicircle is equal to</u>

A=\pi r^{2} /2

r=5/2=2.5\ in -----> radius is half the diameter

substitute

A=(3.14)(2.5^{2})/2=9.8125 in^{2}

<u>The area of the larger semicircle is equal to</u>

A=\pi r^{2} /2

r=14/2=7\ in -----> radius is half the diameter

substitute

A=(3.14)(7^{2})/2=76.93\ in^{2}

The area of the figure is equal to

70+9.8125+76.93=156.7425=157\ in^{2}

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