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Reptile [31]
3 years ago
15

What is the approximate area of a circle with a diameter of 28 centimeters? Use π = 3.14.

Mathematics
2 answers:
larisa [96]3 years ago
8 0
Formula is π * r^2

π = about 3.14 and the radius is half of the diameter so 28/2 = 14

3.14 * 14^2 = 615.44

B

Nikitich [7]3 years ago
3 0

Answer:

B.

615.4 square centimeters

Step-by-step explanation:

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"Find x" I managed to get -6/2c, I just want to double check if that is correct
Soloha48 [4]

- 6/2c is the correct solution

collect like terms : 3cx - cx = 2cx

hence 2cx = - 6

dividing both sides by 2c gives x = - 6/2c


7 0
3 years ago
Estimate the area of the parallelogram.
Elan Coil [88]

Answer:

c

Step-by-step explanation:

6 0
3 years ago
Write an equation of the perpendicular bisector of the segment with endpoints G 9,8       and H 3,2      .
Norma-Jean [14]

Answer:

y = -x + 11

Step-by-step explanation:

The equation of a straight line is is given by:

y = mx + b; where m is the slope and b is the y intercept

The equation of the line joining G(9, 8) and H(3, 2) is given as:

y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)\\\\y-8=\frac{2-8}{3-9}(x-9)\\\\y-8=x-9\\\\y=x-1

The perpendicular bisector of the line joining G(9, 8) and H(3, 2) is perpendicular to the line joining G(9, 8) and H(3, 2) and passes through the midpoint of line joining G(9, 8) and H(3, 2).

Let (x, y) be the midpoint of the line joining G(9, 8) and H(3, 2). Hence:

x = (9 + 3)/2 = 6

y = (8 + 2)/2 = 5

The midpoint = (6, 5)

Two lines are perpendicular if the product of their slopes is -1.

The line joining G(9, 8) and H(3, 2) has a slope of 1, hence, the slope of the perpendicular bisector would be -1.

This means that the perpendicular bisector has a slope of -1 and passes through (6, 5). Using:

y-y_1=m(x-x_1)\\\\y-5=-1(x-6)\\\\y-5=-x+6\\\\y=-x+11

The equation of the perpendicular bisector is y = -x + 11

8 0
3 years ago
8(8p+8)=640 solve <br> Answer ASAP please
Ede4ka [16]

Answer:

p = 9

Step-by-step explanation:

8(8p + 8) = 640

use the dist property

64p + 64 = 640

<u>         -64      -64</u>

64p = 576

divide by 64

p = 9

6 0
3 years ago
Read 2 more answers
Help please<br><br> 2 (2b + 8)<br><br> b = 2
Bess [88]

Answer:

24

Step-by-step explanation:

2(2x2+8)

2(4+8)

2(12)

24

7 0
3 years ago
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