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MakcuM [25]
1 year ago
14

The diameter of a circle is 62cm

Mathematics
2 answers:
andreev551 [17]1 year ago
8 0
Answer is 3017.5 cm^2
Reason

We know diameter is 62
Radius (r) is 1/2 of diameter so r=31

Formula for area
A= pi r^2
Fill in what we know
A= (3.14) (31^2)
Multiply
A=3017.54
Round to 1 dp
A= 3017.5

Maksim231197 [3]1 year ago
7 0

Step-by-step explanation:

Area = 22/7¥r²

Area = 3.14 × 31cm × 31cm

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Find the area of the circle. Round your answer to two decimal places, if necessary.
Arlecino [84]

Answer:

Step-by-step explanation:

The equation for the area of a circle is A=\pir^{2}.

A=area

r=radius

We were given the diameter of the circle not the radius, so we need to solve for the radius.

Radius=(1/2)Diameter So,

(1/2)6=3mm

Now we can solve for the area.

3^2(3.1415926)=28.2743mm

Now round to two decimal places.

28.27mm

6 0
2 years ago
Hey guys i need some help :)
marishachu [46]

answer:

the candle would be gone by then (done burning)

step-by-step explanation:

ok, so the candle starts off at 4in and it'll already be gone before the first hour passes. (or at least it would be in the case that by every 30 minutes 6in is burned.)

hopefully, this is what you were looking for

good luck :)

have a great day !!

5 0
3 years ago
Justin likes to get 7 hours of sleep. He woke up after sleeping for 5 1/3 hour. How many more hours does he need to get the amou
Valentin [98]

Answer:

He needs 1 hour 40 minutes more to get the amount of sleep he likes or 1 2/3 hours

Step-by-step explanation:

Justin likes to get 7 hours of sleep.

He woke up after sleeping for 5 1/3 hour = 5 hours 20 mins

Number of more hours needed to get the amount of sleep he likes= 7 hours - 5 1/3 hours.

1 hour = 60 minutes

1/3 hours = 60/3 = 20 minutes

Hours         Minutes

7                     00       when we borrow 1 hour we borrow 60 minutes

<u>5                    20</u>

<u> 1                   40</u>

<u />

He needs 1 hour 40 minutes more to get the amount of sleep he likes

or 1 2/3 hours

8 0
2 years ago
Which of these situations can be represented by the opposite of -9
Nitella [24]
The answer is B) you climb up 9 flights of stairs

7 0
3 years ago
Read 2 more answers
From past results, a professor knows that the test score of a student taking her final examination is a random variable with mea
umka2103 [35]

Answer:

option B

Step-by-step explanation:

Given,

mean result (μ) = 65

standard deviation (σ)= 15

probability that student will score between 50 and 80

= P(50< x

= P(50< x

= P(50< x

 = P(Z < 1) - P(Z < -1)

Using z table,  

= 0.8413 - 0.1587

= 0.6826

the correct answer is option B

8 0
3 years ago
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