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3 years ago

The diameter of a circle is 8 cm. find it's area in terms of pi

Mathematics

2 answers:

nydimaria [60]3 years ago

3 0

Answer:

d=8

r=d/2

r=4

a=πr^2

=22/7×4×4

=50.28

sineoko [7]3 years ago

3 0

The answer is 50.27cm to the second power

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First
360 divided by 12=30
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ben got=30 x 7 =210
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3 years ago

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Sladkaya [172]

The distance between any 2 points P(a,b) and Q(c,d) in the coordinate plane, is given by the formula:

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$|tv|= \sqrt{(13-5.4)^{2} + (1.6-3.7)^{2}}= \sqrt{ (7.6)^{2}+ (-2.1)^{2}}=\\\\ \sqrt{57.76+4.41}= \sqrt{62.17} \approx 7.9$

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3 years ago

Mrs. Quirk buys 1 quart of milk. Michael drinks 2/7 quart of it. Joel drinks 1/3 quart of it. How many quarts of milk are left?

Vikentia [17]

First, let's find the least common denominator, or LCD of both of them. of the two fractions.

7 and 3 both go into 21.

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1/3 * 7/7 = 7/21 quart
Joel drank 7/21 quart of milk.

Add together 7/21 and 6/21 to get 13/21, the total amount of milk they both drank from the quart.

Now, subtract 13 from 21 to find how many quarts are left. Simplify if necessary.
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3 years ago

Compute the value of the discriminant and give the number of real solutions of the quadratic equation.

Sergio039 [100]

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The value of the discriminant is 12.
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3 years ago

Emily brought $35 to the fair. At the fair, she spent $16 on ride tickets and she also bought lunch. She had $7 when she left th

MatroZZZ [7]

Answer:

Emily spend $12 on lunch.

The correct option is Option A i.e 23 plus x equals 35; x equals 12

Step-by-step explanation:

Let amount spent on Lunch = x

Total money Emily brought to the fair = $35

Money Spend on ride tickets and lunch = 16+x

Money Left with Emily = $ 7

We need to find how much Emily spend on lunch

SO,

We can write the equation $16+x+7=35\\$

As, total money is 35 and $7 are still with emily

Solving to find value of x

$16+x+7=35\\x+23=35\\x=35-23\\x=12$

So, Emily spend $12 on lunch.

The correct option is Option A i.e 23 plus x equals 35; x equals 12

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3 years ago

The diameter of a circle is 8 cm. find it's area in terms of pi​

The diameter of a circle is 8 cm. find it's area in terms of pi