1.find the area heigh 5ft width 8 ft
A=H x W
A= 5ft x 8Ft
A= 40ft^2
2.The circular surface of a table has a diameter of 4 ft. What it will cost to have the top refinished if the company charges $5.00 per square foot for the refinishing ? Use 3.14 for pi and round your answer to the nearest cent.
(3.14)x(4/2)^2
(3.14)(2)^2
(6.28)^2=39.4384
39.4384 x $5.00
$197.19
3. Divid by moving the decimal point 27.3/10^5=
.000273
4. A beef roast weighing 6.6lb costs $2.25 per pound. What is the cost of the roast?
$2.25
x 6.6
$14.85
5. Write 0.00548 as a common fraction or mixed number.
548/100,000 = 137/25,000
2.The circular surface of a table has a diameter of 4 ft. What it will cost to have the top refinished if the company charges $5.00 per square foot for the refinishing ? Use 3.14 for pi and round your answer to the nearest cent.
(3.14)x(4/2)^2
(3.14)(2)^2 ok to here. For the next step you squared 3.14 x 2 but you should have squared just the 2.
3.14(2)2 = 3.14(4)=12.566 ft2. Then multiply by $5.00.
(6.28)^2=39.4384
39.4384 x $5.00
$197.19
Two notes:
1. Numbers 1, 3, and 4 look ok.
2. The 12.566 I have above should be 12.56 if we are using 3.14 for pi. I used pi from the calculator which uses 3.14159....
1. To find the area of a rectangle, you multiply the height by the width. In this case, the height is 5ft and the width is 8ft. So, the formula becomes A = 5ft x 8ft, which equals 40ft^2. Therefore, the area of the rectangle is 40 square feet.
2. To find the cost of refinishing a circular table, you first need to calculate the area of the circular surface. The formula for the area of a circle is A = πr^2, where π is a mathematical constant (approximately 3.14) and r is the radius of the circle. In this case, the diameter is given as 4ft, so the radius is half of the diameter, which is 2ft. Substituting these values into the formula, you get A = 3.14 x (2ft)^2. Simplifying further, you have A = 3.14 x 4ft^2, which equals 12.56ft^2.
Next, multiply the area by the cost per square foot for refinishing, which is $5.00. So, the final calculation becomes 12.56ft^2 x $5.00, resulting in $62.80. Therefore, it will cost $62.80 to have the circular table top refinished.
3. To divide a number by moving the decimal point, you can divide the given number by 10 raised to the power of the number of decimal places you want to move. In this case, you have 27.3 divided by 10 to the power of 5. Since you want to move the decimal point 5 places to the left, you divide 27.3 by (10^5) or 10,0000.
Completing the calculation, you get 27.3 / 10^5 = 0.000273. Therefore, the result of dividing 27.3 by moving the decimal point 5 places to the left is 0.000273.
4. To calculate the cost of a beef roast, you multiply its weight by the cost per pound. In this case, the beef roast weighs 6.6lb, and the cost per pound is $2.25. So, the calculation becomes $2.25 x 6.6lb = $14.85. Therefore, the cost of the roast is $14.85.
5. To write 0.00548 as a common fraction or mixed number, you need to express the decimal value as a fraction. The number 0.00548 can be written as 548/100,000. However, you can simplify this fraction further by dividing both the numerator and the denominator by their greatest common divisor, which is 4 in this case. By simplifying, you get the fraction 137/25,000. Therefore, 0.00548 is equivalent to the fraction 137/25,000.