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Viktor [21]
3 years ago
12

What is the approximate area of the circle? Use 3.14 for n.

Mathematics
2 answers:
anastassius [24]3 years ago
6 0

Answer:

12.5 in^2

Step-by-step explanation:

C=2\pi r

25=2(3.14)r

25=6.28r

Divide by 6.28 on both sides:

3.98089172=r

Now use \pi r^{2}:

12.5 in^2

shusha [124]3 years ago
6 0
Your answer is b 157 square inches
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I leave my family's vacation cabin at 8 a.m. and start driving home at a nice, safe 45 mph. Two hours later, my husband, who alw
Murljashka [212]

Answer:

2:30 pm

Step-by-step explanation:

In two hours (from 10am), she is 45 * 2 = 90 miles from vacation cabin.

From then on her average is still 45 mph and her husband's is 65 mph. So, husband catches her 20 miles (65-45=20) in every hour.

<em>The husband has to catch up 90 miles. How long would it take if he is catching up at 20 miles an hour?</em>

<em>90/20 = 4.5 hours</em>

<em />

<em>So husband starts at 10am and 4.5 hours form that time is 2.30pm</em>

6 0
3 years ago
Calculate the length of the circumference of a circle with diameter of 10.4
Kitty [74]
To work out the Circumference of a circle, we must o the calculation
πd
π x d
If we fill in the information we know
π x 10.4
3.14 x 10.4       (to 2 d.p.)
↓
32.656 (units)
7 0
3 years ago
Read 2 more answers
Nine yards of ribbon are cut into 8 equal pieces what is the length of each piece of ribbon. Write a division expression to repr
PSYCHO15rus [73]

Answer:

x=\frac{9}{8}\ yards

x=1.125\ yards

Step-by-step explanation:

Let's call x the length of each piece in yards

If the ribbon is cut into 8 equal pieces then the sum of the pieces is:

x+x+x+x+x+x+x+x=8x

Then:

8x=9\ yards

Now we solve the equation for x

8x=9\ yards

Divide both sides of equality by 8

\frac{8}{8}x=\frac{9}{8}\ yards

x=\frac{9}{8}\ yards

So the length of each piece is \frac{9}{8} of a yard.

This is: 1.125 yards

6 0
3 years ago
Which of the following values does not satisfy the inequality -2x - 6 is less than or equal to 1
Vsevolod [243]

Answer:

X ≥ 3.5

Step-by-step explanation:

-2x-6≤1

+6 +6

-2x≤7

-2x/2 7/2

x ≥ 3.5

5 0
3 years ago
Twenty-one people brought a chocolate cake to a community potluck dinner each cake was split into 8 slices how many slices of ch
dexar [7]

Answer:

168

Step-by-step explanation:

Multiply 21 by 8 so

21 × 8 = 168

6 0
3 years ago
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