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Crank
3 years ago
12

Find the area of a circle with diameter 12 cm.

Mathematics
1 answer:
Anastasy [175]3 years ago
8 0

Answer:

113.1cm²

Step-by-step explanation:

I believe this is the answer if not I'm so sorry for getting it wrong.

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Please Help!
rosijanka [135]

Answer:

x^2 - 12x..............................

6 0
2 years ago
Number 10 !! I NEED HELP THANKYOU
Lunna [17]
You have to get from $30 to $21.75
21.75/30=0.725 x 100= 72.5% of the original price

7 0
3 years ago
Evaluate the integral. 3 2 t3i t t − 2 j t sin(πt)k dt
sveta [45]

∫(t = 2 to 3) t^3 dt

= (1/4)t^4 {for t = 2 to 3}

= 65/4.

----

∫(t = 2 to 3) t √(t - 2) dt

= ∫(u = 0 to 1) (u + 2) √u du, letting u = t - 2

= ∫(u = 0 to 1) (u^(3/2) + 2u^(1/2)) du

= [(2/5) u^(5/2) + (4/3) u^(3/2)] {for u = 0 to 1}

= 26/15.

----

For the k-entry, use integration by parts with

u = t, dv = sin(πt) dt

du = 1 dt, v = (-1/π) cos(πt).


So, ∫(t = 2 to 3) t sin(πt) dt

= (-1/π) t cos(πt) {for t = 2 to 3} - ∫(t = 2 to 3) (-1/π) cos(πt) dt

= (-1/π) (3 * -1 - 2 * 1) + [(1/π^2) sin(πt) {for t = 2 to 3}]

= 5/π + 0

= 5/π.

Therefore,

∫(t = 2 to 3) <t^3, t√(t - 2), t sin(πt)> dt = <65/4, 26/15, 5/π>.

3 0
3 years ago
In January, the depth of a lake was 808 feet. In August, the depth of the lake was 606 feet. What is the percentage decrease dec
Akimi4 [234]

Answer:

25

Step-by-step explanation:

808-606/808

7 0
3 years ago
Read 2 more answers
A news report says that 28%of high school students pack their lunch. Your high school has 600 students. How many students in you
Vesnalui [34]
Roughly 168

multiply 0.28 by 600 
5 0
3 years ago
Read 2 more answers
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