3 years ago

The radius of a circle was increased by 25 percent. By what percent did the area of the circle increase?

1 answer:

8 0

the area would increase by 56.25%

the new radius would be 1.25 the length of the original radius, you would then need to square it and subtract the original

You might be interested in

Cos X Y 12 X 16 20 Z 4 A) 3/4 B) 4/3 C)3/5 D) 5/4

yanalaym [24]

Answer:

$\cos X = \frac{12}{20} \\ = \frac{3}{5}$

5 0

3 years ago

You need to order carpet for a room that has a length that is twice its width. If the area of the room is 288 square feet, find

Aleksandr-060686 [28]

Answer: d) 12 ft

Step-by-step explanation:

Let x be the width of the room , the the length of the room will be 2x.

We consider the shape of room is rectangle.

We know that the area of rectangle is given by :-

$A=l\times w$ , where l is length and w is width.

Given : Area of the room is 288 square feet

$\Rightarrow 288=2x\times x\\\\\Rightarrow\ 2x^2=288\\\\\Rightarrow\ x^2=144\\\\\Rightarrow\ x=-\sqrt{144}=\pm12$

Since, width cannot be negative, so the width of the room = 12 feet.

3 0

3 years ago

which type of angle pair are 1.) Obtuse 2.) Linear pair 3.) Complementary angles 4.) Vertical angles

julia-pushkina [17]

Answer:

Step-by-step explanation:

4 0

3 years ago

Solve for x. NEED ANSWER ASAP TYY SO MUCH IN ADVANCE

Serjik [45]

Answer:

x = 10√3

Step-by-step explanation:

Because of the right angles, we can use Pythagoras

30² - x² = y² (a) Largest triangle

y² - 20² = h² (b) Medium triangle

substitute y² from (a) into (b)

30² - x² - 20² = h²

500 - x² = h² (d)

x² - h² = (30 - 20)² (c) smallest triangle

substitute h² from (d) into (c)

x² - (500 - x²) = 100

2x² = 600

x² = 300

x = 10√3

4 0

3 years ago

Can you help please, my teacher, gave us a " challenge" 1x2+4(4+3-4)+3456-2000^2nd power.

Serga [27]

The final answer is -3996530

5 0

3 years ago