Yousef is putting shingles on his garage roof. He will need 24 rows of shingles, with 45>shingles in each row. How many shingles does he need for the garage roof?
If we want to know the size of a wall that needs to be painted or a floor that needs to be carpeted, we will need to find its
area . The area is a measure of the amount of surface that is covered by the shape. Area is measured in square units. We often use square inches, square feet, square centimeters, or square miles to measure area. A square centimeter is a square that is one centimeter (cm.) on a side. A square inch is a square that is one inch on each side, and so on.
For a rectangular figure, the area is the product of the length and the width.
[link] shows a rectangular rug with a length of
$2$ feet and a width of
$3$ feet. Each square is
$1$ foot wide by
$1$ foot long, or
$1$ square foot. The rug is made of
$6$ squares. The area of the rug is
$6$ square feet.
Jen’s kitchen ceiling is a rectangle that measures 9 feet long by 12 feet wide. What is the area of Jen’s kitchen ceiling?
Solution
We are asked to find the area of the kitchen ceiling.
The product of any number and 0 is 0.
$a\cdot 0=0$ $0\cdot a=0$
Identity Property of Multiplication
The product of any number and 1 is the number.
$1\cdot a=a$ $a\cdot 1=a$
Commutative Property of Multiplication
Changing the order of the factors does not change their product.
$a\cdot b=b\cdot a$
Multiply two whole numbers to find the product.
Write the numbers so each place value lines up vertically.
Multiply the digits in each place value.
Work from right to left, starting with the ones place in the bottom number.
Multiply the bottom number by the ones digit in the top number, then by the tens digit, and so on.
If a product in a place value is more than 9, carry to the next place value.
Write the partial products, lining up the digits in the place values with the numbers above. Repeat for the tens place in the bottom number, the hundreds place, and so on.
Insert a zero as a placeholder with each additional partial product.
Add the partial products.
Questions & Answers
where we get a research paper on Nano chemistry....?
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest.
Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.?
How this robot is carried to required site of body cell.?
what will be the carrier material and how can be detected that correct delivery of drug is done
Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Privacy Information Security Software Version 1.1a
Good
A soccer field is a rectangle 130 meters wide and 110 meters long. The coach asks players to run from one corner to the other corner diagonally across. What is that distance, to the nearest tenths place.
Jeannette has $5 and $10 bills in her wallet. The number of fives is three more than six times the number of tens. Let t represent the number of tens. Write an expression for the number of fives.
why surface tension is zero at critical temperature
Shanjida
I think if critical temperature denote high temperature then a liquid stats boils that time the water stats to evaporate so some moles of h2o to up and due to high temp the bonding break they have low density so it can be a reason
s.
Need to simplify the expresin. 3/7 (x+y)-1/7 (x-1)=