![Jasmine3864](/avatars/10953.jpg)
Jasmine3864
06.04.2021 •
Mathematics
PLEASE HELP
Jackson has a table with a square top and he wants to buy a circular piece of lace
that will cover the entire top of the table. The top of the table has side lengths of 12
inches, as shown.
12 in
12 in
What is the area, in square inches, of the smallest circular piece of lace Jackson could buy? Round your answer to the nearest tenth
Solved
Show answers
More tips
- H Health and Medicine Headache: A Comprehensive Guide to Treatment...
- G Goods and services Stock center - a modern way of optimizing logistics...
- F Food and Cooking How to Properly Wash a Down Jacket? Tips from Experts...
- C Computers and Internet Thin Client: What It Is and Why You Need It?...
- F Food and Cooking The Most Delicious and Simple Fish in Batter Recipe...
- F Food and Cooking Red Caviar: How to Choose the Best?...
- C Computers and Internet Clearing Cache: How to Speed Up Your Browser...
- S Style and Beauty How are artificial nails removed?...
- S Style and Beauty Secrets of Tying a Pareo: 5 Ways...
Answers on questions: Mathematics
- M Mathematics Classify each polynomial by writing the degree of the polynomial 7x3+5x2+1...
- M Mathematics Find x Please help me solve this!...
- M Mathematics Six times a number is equal to the number increased by 15 find the number...
- M Mathematics Compute the range,mean absolute division, and standard division of the following set data:...
- M Mathematics Write the equation of the circle with center at (-3,2) and tangent to the line y=-3 Write the equation of the circle with center at (2,-3) and tangent to the line...
- M Mathematics 6. Quadrilateral EFGH is inscribed inside a circle as shown below. Write a proof showing that angles Hand F are supplementary F. H...
- M Mathematics the more the volume of a cone shaped hole is 12 pi ft3if the hole is 4 ft deep what is the radius of the whole...
- M Mathematics Can someone please help me with this question it s very urgent.... thank you this is a parallelogram. determine H...
- M Mathematics The growth in computer specialists was remarkable during 1960-1970 for both sexes. Calculate the percentages of growth for both sexes in this service occupation....
- M Mathematics The difference of a number and 10 is less than 4...
Ответ:
452.38
Step-by-step explanation:
I'm pretty sure this is incorrect(or doesn't correlate to this problem) but in the slight chance it is correct here's what I found:
How to Calculate the Area
The area of a circle is:
π (Pi) times the Radius squared:A = π r2
or, when you know the Diameter:A = (π/4) × D2
or, when you know the Circumference:A = C2 / 4π
Example: What is the area of a circle with radius of 3 m ?
circle radius 3
Radius = r = 3
Area= π r2
= π × 32
= 3.14159... × (3 × 3)
= 28.27 m2 (to 2 decimal places)
How to Remember?
circle area pi r-squared (but pies are round!)
To help you remember think "Pie Are Squared"
(even though pies are usually round)
Comparing a Circle to a Square
It is interesting to compare the area of a circle to a square:
circle area is about 80% of square
A circle has about 80% of the area of a similar-width square.
The actual value is (π/4) = 0.785398... = 78.5398...%
Why? Because the Square's Area is w2
and the Circle's Area is (π/4) × w2
Example: Compare a square to a circle of width 3 m
Square's Area = w2 = 32 = 9 m2
Estimate of Circle's Area = 80% of Square's Area = 80% of 9 = 7.2 m2
Circle's True Area = (π/4) × D2 = (π/4) × 32 = 7.07 m2 (to 2 decimals)
The estimate of 7.2 m2 is not far off 7.07 m2
A "Real World" Example
Example: Max is building a house. The first step is to drill holes and fill them with concrete.
The holes are 0.4 m wide and 1 m deep, how much concrete should Max order for each hole?
circle auger
The holes are circular (in cross section) because they are drilled out using an auger.
The diameter is 0.4m, so the Area is:
circle area example
A = (π/4) × D2
A = (3.14159.../4) × 0.42
A = 0.7854... × 0.16
A = 0.126 m2 (to 3 decimals)
And the holes are 1 m deep, so:
Volume = 0.126 m2 × 1 m = 0.126 m3
So Max should order 0.126 cubic metres of concrete to fill each hole.
Note: Max could have estimated the area by:
1. Calculating a square hole: 0.4 × 0.4 = 0.16 m2
2. Taking 80% of that (estimates a circle): 80% × 0.16 m2 = 0.128 m2
3. And the volume of a 1 m deep hole is: 0.128 m3
You can find all this on https://www.mathsisfun.com/geometry/circle-area.html
I really hope this helps and helps for the future, I'm sorry if it's wrong though.
Ответ:
Hope this isn't too late. The Answer Is D.
Step-by-step explanation:
The graph line becomes dotted when the inequality is less than or greater than, never less than or equal to./ greater than or equal to. This leaves to choices: B and D. D is the correct answer because the way the shading is going. because the shading is going up that means that the inequality is greater than.