All categories

2 years ago

What is 75% of the area of a circle with a circumference of 10 units? Round the solution to the nearest square unit.

Mathematics

2 answers:

Aleonysh [2.5K]2 years ago

5 0

Answer:

75% of the area of the circle is 6 square units.

Step-by-step explanation:

Given:

Circumference of a circle = 10 units

Now we have to find the radius of the circle, then we have to find the area of the circle.

Circumference of a circle = 2*π*r [π = 3.14]

2*3.14*r = 10

6.28r = 10

Dividing both side by 6.28, we get

r = 10/6.28

r = 1.59

Now let's find the area of the circle.

The area of the circle = π*r^2

= 3.14*1.59*1.59

The area of the circle = 7.94, which is 100 %

Now we have to find the 75% of the area of the circle.

75% = 0.75

75% of the area of the circle = 0.75*7.94

= 5.95

To round off to the nearest whole number, we get 6 square units.

Zolol [24]2 years ago

3 0

Circumference = 2 pi r = 10

r = 10 / 2 pi

75% of the error = 0.75 * pi * (10 / 2pi)^2

= 5.968 square unts

6 to nearest square unit

You might be interested in

a tree rhar is 8 feet tall is growing at a rate of 2 feet each year a tree is 13 feet tall is growing at a rate of 1 foot each y

Vlad [161]

Answer:

5 years

Step-by-step explanation:

The shorter tree is 5 ft shorter, but is growing 1 ft/year faster. It will make up the difference of 5 ft in (5 ft)/(1 ft/year) = 5 years.

8 0

3 years ago

The graph represents a person's heart rate in beats per minute during 30 minutes of exercise.

Andrej [43]

Looking at the graph closely we can see that the heart rate increases from 0 to 6 min then became steady from 6 to 25 min then finally decreases from 25 to 30 min. Therefore the correct answer is:

“The heart rate increases for 6 minutes, remains constant for 19 minutes, and then gradually decreases for 5 minutes.”

In real life cardiac exercises, we can interpret that the period from 0 to 6 min is the period where the person is still warming up thus leading to an increase in heart rate. At 6 min, the person is fully warmed up hence reaching a stable heart rate. Then at 25 min, the person starts cooling down which means that the exercise is ending soon.

5 0

2 years ago

Find the area of the triangle

kupik [55]

Area = 1/2 * base * height
= 1/2 * 20 * 6
= 1/2 * 120
= 60 ft^2

6 0

3 years ago

What is the slope of this graph? −14 4 14 −4 Number graph ranging from negative 10 to 10 on both the x and y axis. A line passes

spin [16.1K]

The slope of this graph is - 4

Step-by-step explanation:

The slope of a line is $m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$ , where