9514 1404 393
Answer:
- 113.0 cm²
- 2464.0 in²
- 95.0 ft²
Step-by-step explanation:
1. The area of a circle is given by the formula ...
A = πr² . . . . . where r is the radius
The radius is shown as 6 cm, so the area is ...
A = (3.14)(6 cm)² = 113.0 cm²
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2. The radius is shown as 28 in. We note that this is a number divisible by 7, so we choose 22/7 for π.
A = (22/7)(28 in)² = 2464 in² . . . . see comment
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3. The radius is half the diameter, so is 11/2 = 5.5 ft. Then the area is ...
A = (3.14)(5.5 ft)² = 95.0 ft²
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<em>Additional comment</em>
If you use a more exact value of π for problem 2, the area is 2463.0 in². If you use 3.14 as the value of π, the area rounds to 2461.8 in². For these values of pi (3.14 or 22/7), the answer is only good to about 3 significant digits. 2464 has more significant digits, so digits beyond the first 3 may be in error.
Answer:
1
Step-by-step explanation:
m=2
3m²- 2m- 7
3(2)² -2(2) -7
3(4)- 4- 7
12- 4- 7= 1
The rate of increase and decrease associated with Kalani's stock investments would be a 25% per year increase.
Therefore, the correct option of all the answer choices you listed is: C.
Answer:
Number of wallpaper needed = At/Aw = 355.3/75
N = 4.74 ~= 5 rolls
Step-by-step explanation:
Given;
Length of the room = 12 feet 6 inches = 12.5 ft
Breadth of the room = 10 feet 6 inches= 10.5ft
Height of the room = 8 feet
Window = 4 ft by 3ft
door = 7ft by 3 ft
Wall paper = 30 inches by 30ft = 2.5ft by 30ft
The total area of the walls of the room is;
Area = Area of the four walls - Area of the two windows and a door.
A = 2LH + 2BH - Area of windows and door
A = 2(12.5×8) + 2(10.5×8) - 2(4×3) -(7×3)
A = 323ft^2
Allowing 10% waste, total area of wallpaper needed is;
At = 323 × 1.10 = 355.3ft^2
Area of wallpaper Aw= 2.5×30 = 75ft^2
Number of wallpaper needed = At/Aw = 355.3/75
N = 4.74 ~= 5 rolls
The slope of line passing through the given points is: -1/2
Step-by-step explanation:
Given points are:
(x1,y1) = (-8,-1)
(x2,y2) = (-6,-2)
Slope is defined as the steepness of a line.
It is denoted by m.
The formula for slope is:
Putting the values
The slope of line passing through the given points is: -1/2
Keywords: Slope, steepness
Learn more about slope at:
#LearnwithBrainly
