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3 years ago

If the circumference of a circle is 10pi inches, what is the are in square inches of the circle

Mathematics

1 answer:

lesantik [10]3 years ago

7 0

The circle will have an area of approximately 78.5 square inches

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Dot lives 0.2 miles from school and Eleanor lives 0.5 miles away. Who has the longer walk to school each day??

anastassius [24]

.2 is 2/10 while .5 is 1/2. 1/2 is much larger than 1/5 (which is 2/10 reduced).

7 0

3 years ago

Can someone help me answer this? Thanks! :)

sladkih [1.3K]

Answer:

$\pi$

Step-by-step explanation:

$\int _{-2}^2\:\left(x^3cos\:(\frac{x}{2})+\frac{1}{2}\right)\sqrt{4-x^2}dx\\$

7 0

3 years ago

The length and width of a rectangle are measured as 31 cm and 28 cm, respectively, with an error in measurement of at most 0.1 c

MissTica

Answer:

$\Delta A = 5.9\,cm^{2}$

Step-by-step explanation:

The area of an rectangle is given by the following formula:

$A = w\cdot h$

Where:

$w$ - Width, in centimeters.

$h$ - Height, in centimeters.

The differential of the expression is derived hereafter:

$\Delta A = \frac{\partial A}{\partial w} \cdot \Delta w + \frac{\partial A}{\partial h}\cdot \Delta h$

$\Delta A = h \cdot \Delta w + w \cdot \Delta h$

$\Delta A = (31\,cm)\cdot (0.1\,cm) + (28\,cm)\cdot (0.1\,cm)$

$\Delta A = 5.9\,cm^{2}$

5 0

3 years ago

Angle is in standard position and (-5, -7) is a point on the terminal side of 0.

vfiekz [6]

Answer:

Step-by-step explanation:

Don't use 0 as a substitute for θ. 0 is always 0.

cosθ = -5/(2√15)

secθ = 1/cosθ = -2√15/5

4 0

3 years ago

HAVE A NICE DAY <br> WILL GIVE BRAINLST :)

nikitadnepr [17]

Answer:

A. 103 degrees

B. 77 degrees

C. 60 Degrees

Step-by-step explanation:

A. Triangles' interior angles add up to 180, so if you already have 2 angles you just need to put them together, and subtract them from 180.

47+30=77

180-77=103

B. Lines also are 180, so 103-180=77

C. Interior angles of a triangle add up to 180, so 180/3 is how you get your answer.

3 0

3 years ago