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3 years ago

If the radius of the circle was doubled what effect would it have on the area

Mathematics

2 answers:

aleksley [76]3 years ago

6 0

Answer:

stop deleting my answers im helping yall out

Step-by-step explanation:

ch4aika [34]3 years ago

5 0

Answer:

Step-by-step explanation:

If the radius of a circle is doubled, the area of the circle will be quadrupled and the circumference will also be doubled. This makes sense because the area of a circle is directly proportional to the square of the radius of the circle (if the radius of a circle is increased x times, its area will be increased to x^2 times the original area), whereas the circumference is proportional to the size of the radius (if the radius of a circle is increased x times, its circumference will increase x times).

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a 4.50 g coin of copper absorbed 54 calories of heat. what was the final temperature of the copper if the initial temperature wa

I am Lyosha [343]

The final temperature of copper is 155.43°C.

Step-by-step explanation:

The formula to apply is Q=m*Δt*c where ;

Q=heat energy, m=mass, c=specific heat capacity and Δt= change in temperature

Given that Q=54 calories , m=4.50 g and c=0.092 cal/g°C

In this question find Δt then ,the final temperature.

Δt=Q/m*c

Δt=54/4.50*0.092 =130.43°C

To find final temperature, apply the formula;

Δt=Final temperature - Initial temperature

130.43°C=Final temperature-25°C

130.43°C+25°C=Final temperature

155.43°C

Learn More

Specific Heat Capacity : brainly.com/question/12431744

Keyword : specific heat capacity

#LearnwithBrainly

3 0

4 years ago

Which of the following is the conjugate of a complex number with 5 as the real part and −2i as the imaginary part?

Mkey [24]

5+2i. You only have to change the operation of the original expression, not the signs (positives and negatives) of each term.

7 0

4 years ago

Read 2 more answers

A six feet-tall person is standing next to a flag pole.The person is casting a shadow 1 1/2 feet in length,while the flagpoleis

Vlad1618 [11]

Answer:

20 feet

Step-by-step explanation:

Consider the given pictorial representation below,

The Height of the Pole =|AB|

The Height of the Person =|DE|

Shadow cast by the Pole =|AC|

Shadow cast by the Person =|EC|

Triangles ABC and DEC are similar triangles therefore,

$\frac{|DE|}{|AB|} =\frac{|EC|}{|AC|}$

$\frac{6}{x} =\frac{1.5}{5}$

Cross multiplying

x X 1.5 = 6 X 5

x=30/1.5 =20 feet

Height of the flag pole = 20 feet

4 0

3 years ago

Helppppppp.... I cant understand

vovikov84 [41]

6/25

Hope this helps (:

3 0

4 years ago

Read 2 more answers

Find the area of the given shape.

yanalaym [24]

Answer:

66 cm squared

Step-by-step explanation:

split the shape into 2 rectangles, then use the numbers given to solve for the new shapes

3cm by 7cm for one and 5cm by 9 cm for the other (there are multiple ways to split the shape)

multiply those numbers

3 x 7 = 21cm ^2

5 x 9 = 45cm ^2

add them together

66cm ^2 (squared)

8 0

3 years ago