If the floor of a square office is 225 square units, what is the perimeter of the office?

Answers

Answer 1
Answer:

The perimeter of an office whose floor area is 225 square units is 60 units

Further Explanation

Area

  • Area is a measure of how much space is occupied by a given shape.
  • Area of a substance is determined by the type of shape in question.

For example;

  • Area of a rectangle is given by; Length multiplied by width
  • Area of a triangle = 1/2 x base x height
  • Area of a circle = πr². where r is the radius of a circle,
  • Area of a square = S², Where s is the side of the square.etc.

Perimeter

  • Perimeter is defined as the distance along a two dimension shape.  Perimeter of different shapes is given by different formulas

For example;

  • The perimeter of a rectangle = 2(length+width)
  • The perimeter of a triangle = a+b+c; where a, b and c are the sides of the triangle. etc.

In this case;

We are given the area of a square as 225 square units

Therefore; since the area of a square is given as s², where s is the side of the square.

Then; s² = 225

         s = √ 225

             = 15 units

But Perimeter of a square is given by; 4 × s

Thus; Perimeter = 4 × 15 units

                           = 60 units

Keywords; Perimeter, Area

Learn more about;

Level: Middle school

Subject; Mathematics

Topic: Area and Perimeter

Answer 2
Answer: Square have 4 equal sides length = a

A = 255 
A = a^2

255 = a^2   |sqrt
15 = a

P = 4a 
P = 4*15 = 60

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Answers

The answer is -10128

Find the area of the semicircle need help asapp

Answers

Answer:

2 pi

Step-by-step explanation:

The radius is 2

The area of a circle is

A = pi r^2

We have 1/2 of a circle so

1/2 A = 1/2 pi r^2

         =1/2 pi ( 2)^2

         =1/2 pi *4

      = 2 pi

The perimeter of a square is 20 ft. If you increase the length of the square by 2 feet and decrease the width by 1 foot, what is the area, in square feet, of the new figure

Answers

All 4 sides of a square are the same length.
If the perimeter of the square is 20-ft, then each side is 20-ft/4 = 5 ft.

If you increase the length of the square by 2-ft, then its new length is 5+2 = 7-ft.
 
If you decrease the width of the square by 1-ft, then its new width is 5-1 = 4-ft.

The area of the new figure is (length) x (width) = (7-ft x 4-ft) = 28 square feet.
The square before the transformation would have side lengths of 5 since 5*4=20
so increasing the length and decreasing the width would make the square a rectangle with dimensions 7×4.
a=LW
a=(7)(4)
=28ft²

a bookstore had 64 copies of a magazine. yesterday it sold 5/8 of them. how many copies were sold yesterday?write your answer in simplest form.

Answers

40 magazines were sold.

Determine the pattern rule for the table and write it as an equation.​

Answers

Answer:

The rule is: y = -10x+85

Step-by-step explanation:

The rule is given by:

y = mx+b

Here m is the gradient and b is the y-intercept.

We have to take two pairs of input-output to find the rule

Let the two pairs be:

(x1,y1) = (1,75)

(x2,y2) = (2,65)

Slope is found using the formula:

m = (y_2-y_1)/(x_2-x_1)

Putting the values

m = (65-75)/(2-1)\nm = -10

Putting the value of slope

y = -10x+b

Putting a pair of input-output in the equation (1,75)

75 = -10(1) +b\n75 = -10+b\nb = 75+10\nb = 85

Putting the value of b

y = -10x+85

Hence,

The rule is: y = -10x+85

Robert can paint a room in 6 hours. Julio can paint a room in 8 hours.how long will it take for the two of them to paint a room together?

Answers


Robert paints  1/6  of a room in an hour.
Julio paints  1/8  of a room in an hour.
Working together, they can paint (1/6 + 1/8) room/hour =

                                                (4/24 + 3/24) room/hour =

                                                      7/24 of a room per hour.

7/24 of a room per hour means

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                                     (24 / 7) (hour/room) =   (3 and 3/7) hour per room.


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divide each by 14
x=48/14
x= 3.43 roughly