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3 years ago

Find the area and the circumference of a circle with radius 7 cm.

Mathematics

1 answer:

aniked [119]3 years ago

3 0

Answer:

C=14pi cm

A=49pi cm^2

Step-by-step explanation:

1) Circumference of a circle is 2piR and R=7cm

C=2pi(7)

C=14pi cm

2) Area of a circle is piR^2 and R=7cm

A=pi (7)^2

A=49pi cm^2

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3 years ago

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A rectangle is made up of green and red tiles. the ratio of green tiles to red tiles is 3:4. Which of the following could be the

Naddika [18.5K]

Answer:

H) 24

Step-by-step explanation:

24 is the only number that is divisible by 3.

CHECK:

3 x 8 : 4 x 8

24:32✔

(You can try dividing '3' by the other numbers to also check your answer)

Hope this helped ^^

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3 years ago

EMERGENCY A speeding ticket costs $80 plus $10 for each mile per hour over the speed limit the violator was traveling. How much

Basile [38]

Answer:

$200

Step-by-step explanation:

Fine calculated per mile = $10

Fine calculated for 'm' mile = 10 * m = 10m

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Cost paid by the violator = 80 + 10*12

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3 0

3 years ago

Which answer choice is this? A 33 B 60 C 72 D 65

Artemon [7]

Answer:

x = 11

Step-by-step explanation:

• All interior angles in a triangle add up to 180.

• The square in the triangle represents 90°

90 + 45 + 1 + 4x = 180

136 + 4x = 180

4x = 180 - 136

4x = 44

x = 11

3 0

3 years ago

The pie chart shows information about voters in an election. 2800 more women vote than men. Work out the total number of voters.

Dmitry [639]

The picture in the attached figure

let
x--------> men voters
y-------> women voters

we know that
y=x+2800------> y-x=2800------> equation 1

step 1
find the percentage of women and men voters
in the graph
central angle by men voters=130°
central angle by women voters=(360°-130°)-------> 230°
by using proportion
men voters
$\frac{360}{100} = \frac{130}{M} \\ M=(100*130)/360 \\ M=36.11$ %

women voters
$\frac{360}{100} = \frac{230}{F} \\ F=(100*230)/360 \\ F=63.89$ %

remember equation 1
y-x=2800
so
F-M=63.89%-36.11%----> 27.78%

if 27.78% correspond to 2800 voters
100%---------------------->T
T=100*2800/27.78-------> T=10,079.19 voters

the answer is
about 10,079 voters

6 0

3 years ago