All categories

2 years ago

What is the exact area of the following circle?

Mathematics

2 answers:

Vsevolod [243]2 years ago

5 0

Answer:

2nd option

› 56.25π cm²

Step-by-step explanation:

we know , 

area of circle is πr²

so,

given,

diameter,d = 15cm

radius,r = d/2 = 15/2 = 7.5 cm

so,

area = πr²

= (7.5×7.5)π

= 56.25π cm²

i hope you find it helpful !!!!

pychu [463]2 years ago

3 0

Answer:

56.25 pi cm^2

Step-by-step explanation:

To find the area of the circle,

we use the formula

A = pi r^2, where r is the radius

We know the diameter is 15 so we can find the radius from

r = d/2 where d is the diameter

r = 15/2

A = pi ( 15/2) ^2

A = pi ( 225/4)

A = 56.25 pi cm^2

You might be interested in

Question 7

serg [7]

$\huge\underline{\red{A}\blue{n}\pink{s}\purple{w}\orange{e}\green{r} -}$

Given - a cone with volume 769?3 ft³ , having a height of 15 ft

To calculate - radius of the cone

We know that ,

$\bold{Volume \: of \: cone = \frac{1}{3}\pi \: r {}^{2} h }\\$

substituting the values in the formula stated above ,

$\bold{769.3 = \frac{1}{3} \times 3.14 \times r {}^{2} \times 15} \\ \\\bold{\implies r {}^{2} = \frac{769.3 \times 3}{3.14 \times 15} } \\ \\\bold{\implies r {}^{2} = \cancel\frac{2307.9}{47.1}} \\ \\\bold{ \implies \: r {}^{2} = 49} \\ \\ \bold{\implies \: r = 7 \: ft}$

therefore ,

radius = 7 cm

hope helpful ~

4 0

2 years ago

What is the result of 36 divided by 9? Use the number line to find the answer. A number line going from 0 to 39. The numbers 0,

Vladimir79 [104]

Answer:

Step-by-step explanation:

36/9=4

7 0

3 years ago

Read 2 more answers

B = 54°, b=15, c= c = ? (Round answers to the nearest hundredth.)

zaharov [31]

Answer:

18.54

Step-by-step explanation:

sine is opposite/hypotenuse, and you have opposite (b=15), so use that

sin(54) = 15/c

c = 15/sin54

then use calculator

c = 18.54

8 0

2 years ago

1/2(16X + 10Y) – 10X – 7Y

Illusion [34]

Answer:

the answer is −2⋅(x+y)

5 0

3 years ago

The difference between John and

ddd [48]

Answer:

$46,130,75 or $43,869.25

Step-by-step explanation:

8 0

3 years ago