All categories

2 years ago

What is the circumference of the circle? Assume π=3.14

Mathematics

1 answer:

PtichkaEL [24]2 years ago

6 0

Answer: 31.4 cm

Step-by-step explanation:

$C=2\pi r =2\pi(5) =10\pi \approx 10(3.14)=\boxed{31.4}$

You might be interested in

What is the area of a circle if the radius is 13

Kisachek [45]

A = pi * r^2.....r = radius and pi = 3.14

A = (3.14)(13^2)
A = 3.14(169)
A = 530.66

7 0

2 years ago

PLEASE HELP ASAP ILL GIVE BRAINLIEST!!!!!<br><br>find measure of arc MK

Gwar [14]

Answer:

Arc length MK = 15.45 units (nearest hundredth)

Arc measure = 58.24°

Step-by-step explanation:

Calculate the measure of the angle KLN (as this equals m∠KLM which is the measure of arc MK)

ΔKNL is a right triangle, so we can use the cos trig ratio to find ∠KLM:

$\sf \cos(\theta)=\dfrac{A}{H}$

where:

$\theta$ is the angle
A is the side adjacent the angle
H is the hypotenuse (the side opposite the right angle)

Given:

$\theta$ = ∠KLM
A = LN = 8
H = KL = 15.2

$\implies \sf \cos(KLM)=\dfrac{8}{15.2}$

$\implies \sf \angle KLM=\cos^{-1}\left(\dfrac{8}{15.2}\right)$

$\implies \sf \angle KLM=58.24313614^{\circ}$

Therefore, the measure of arc MK = 58.24° (nearest hundredth)

$\textsf{Arc length}=2 \pi r\left(\dfrac{\theta}{360^{\circ}}\right) \quad \textsf{(where r is the radius and}\:\theta\:{\textsf{is the angle)}$

Given:

r = 15.2
∠KLM = 58.24313614°

$\implies \textsf{Arc length MK}=2 \pi (15.2)\left(\dfrac{\sf \angle KLM}{360^{\circ}}\right)$

$\implies \textsf{Arc length MK}=\sf 15.45132428\:units$

6 0

2 years ago

Plz help................

Paul [167]

The answer is $a^{2} +2a$

3 0

3 years ago

Read 2 more answers

Can someone please help me with part B?

Ira Lisetskai [31]

Y = - 20x + 100

Slope is -20, y-intercept is 100.

4 0

2 years ago

Can someone help me fast please!!!!

allochka39001 [22]

Answer:

Step-by-step explanation:

121=irrational

100= rational

99= irrational

10=rational

8 0

3 years ago