All categories

3 years ago

A área do círculo mede 196 π cm². Qual a medida do seu raio?

Mathematics

2 answers:

AleksandrR [38]3 years ago

8 0

Hey there!!

The area of a circle = πr²

The area is given as 196π

Hence,

196π = πr²

... r²= 196

... r = √196

... r = 14

Hence, the radius is 14 cm.

Hope it helps!

Rzqust [24]3 years ago

7 0

Answer:

Step-by-step explanation:

The area formula for a circle is A = pi*r^2. Solve this for the radius (raio):

r^2 = A / pi, or r = plus or minus √(A/pi).

Here, r = +√(A/pi) = +√( 196 pi cm^2 / pi ) = +7.9 cm.

Check: A = pi*r^2. Does pi*(7.9 cm)^2 = pi*196 cm^2? Yes.

You might be interested in

Some values of functions f, g, h, and k are provided in the

Ede4ka [16]

Answer:

100(1/2)^x

Step-by-step explanation:

i took the test

4 0

3 years ago

1.) 2x + 3 = - 3x - 2 Can someone explain this to me plz step by step

uranmaximum [27]

Answer:

x = -1

Step-by-step explanation:

2x + 3 = -3x -2

2x = -3x -5

5x = -5

x= -1

5 0

3 years ago

Brody found a rare, one-of-a-kind character card in his new deck. The card is valued at $24.95. Every year, the card's value inc

Mademuasel [1]

The answer is D. because after the 25 years the value increases by 66$ which makes the card valued at 90.95 once you add the original value. Thus making the card less than 100$

6 0

4 years ago

Read 2 more answers

Solve the triangle.

saw5 [17]

Answer:

Step-by-step explanation:

because c is shorter than a we know C is a smaller angle than A

so the first choice is out.

use the law of cosines to find b

$b^{2}$ = $a^{2} +c^{2} -2*a*c*cos(B)$

$b^{2}$ =1681+400-1326.787871

$b^{2}$ = 754.21219

b= $\sqrt{754.21219}$

b= 27.46292

so the last choice looks good

5 0

3 years ago

Question 14. Select the correct answer. If f(x)=x^2/x+3, find f(x+h)

vekshin1

Answer:

$f(x+h)=\frac{x^2+2h+h^2}{x+h+3}$

Step-by-step explanation:

we have

$f(x)=\frac{x^2}{x+3}$

To find out f(x+h), substitute the variable x by the variable (x+h) in the function f(x)

$f(x+h)=\frac{(x+h)^2}{(x+h)+3}$

$f(x+h)=\frac{x^2+2h+h^2}{x+h+3}$

6 0

4 years ago