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3 years ago

If the radius of a circle 3 meters. what is the circles diameter?

2 answers:

7 0

A radius is a strait line from the center of the circle to the circumference, while a diameter is a straight line from one side of the circumference to another that passes through the center. Therefore, the formula to find a diameter is, r2=d or radius•2=diameter

So, let’s plug 3m into this equation

r = 3 meters

r•2=d

3•2=d

6 meters = diameter

german3 years ago

5 0

Answer:

6 m

Step-by-step explanation:

the radius is half of the diameter

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If the perimeter of an equilateral triangle is 30cm, find its area.

lora16 [44]

Answer:

A ≈ 43.3 cm²

Step-by-step explanation:

the area (A) of an equilateral triangle is calculated as

A = $\frac{s^2\sqrt{3} }{4}$ ( s is a side of the triangle )

given perimeter = 30 cm , then

s = 30 cm ÷ 3 = 10 cm

then

A = $\frac{10^2\sqrt{3} }{4}$ = $\frac{100\sqrt{3} }{4}$ = 25 $\sqrt{3}$ ≈ 43.3 cm² ( to the nearest tenth )

7 0

2 years ago

Four times a number increased by 3 is -89

sp2606 [1]

Answer:

-21.5

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Rich and Aylen are saving money to buy baseball tickets. Rich has $5 more than 3 times the amount of money Aylen has. Together,

Olenka [21]

Answer:

4x + 5 = 101

Step-by-step explanation:

Step 1: Determine how much money both have

Aylen: x

Rich: 5 + 3x

Step 2: Write an equation and solve

Aylen + Rich = 101

x + 5 + 3x = 101

Step 3: Solve the equation

x + 5 + 3x = 101

4x = 96

x = 24

Step 4: Determine how much money does Aylan and Rich have

Aylan has $24

Rich has 5 + 3(24) = $77

7 0

2 years ago

What is the radius of the base of the cylinder 42in and 36 in

Usimov [2.4K]

Need additional information, which is the height and which is the diameter of the cylinder from the measurements supplied? Standard forumula for locating Radius and Volume of a cylinder are as follows.

Radius=Diameter/2
$rad=dia/2$

Volume=Base X height
$V=B*h$

Base= 3.14*r*r

8 0

3 years ago

What is the value of the discriminant, b2 − 4ac, for the quadratic equation 0 = x2 − 4x + 5, and what does it mean about the num

sleet_krkn [62]

Answer:

The discriminant is −4, so the equation has no real solutions.

Step-by-step explanation:

In the equation 0 = x² - 4x + 5, a is 1, b is -4, and c is 5.

Plug in these values into b² - 4ac, and simplify:

b² - 4ac

(-4)² - 4(1)(5)

16 - 20

= -4

So, the discriminant is -4. This means that the equation has no real solutions, because the discriminant is a negative number.

The correct answer is that The discriminant is −4, so the equation has no real solutions.

6 0

2 years ago