Deck 13: Combined Operations

Question 1

The difference in area between a circle with a 20" radius and a circle with a 30" diameter is ____________________.

Answer 1

549.78 sq. inches

Question 2

How much money would be left of $500.00 after purchasing a battery drill for $149.95, a set of drill bits for $29.99, and a circular saw for $129.86?

Answer 2

$149.95 + $29.99 + $129.86 = $309.80 $500.00 - $309.80 = 190.20

Question 3

If employee A worked 6.5 hours a day for 7 days, employee B worked 9 hours a day for 6 days, and employee C worked 8.5 hours a day for 8 days, the total hours worked is ____________________ hours.

Answer 3

167.5

Question 4

Which is larger in area -- a triangle with a height of 30" and a base of 15" or a circle with a diameter of 9"?

Question 5

Very often one of the steps to solving a combined-operations problem will be to get all of the known measurements into the same __________.

Question 6

Which is larger -- the perimeter of a 2' * 4' rectangle or the circumference of a circle with a diameter of 36"?

Question 7

An electrician needs to make 3 conduit runs from one side of a warehouse to the opposite side of the building. If each run is 138' long, how much will be spent on conduit if it comes in 10' lengths and costs $2.81 for each piece?

Question 8

What is the difference in area between a square with sides measuring 16.0" and a circle with a diameter of 16.5"?

Question 9

Name the two keys to solving a combined-operations problem.

Question 10

Assuming the center of the first 2" * 4" stud is placed at the end of the bottom plate, how many studs are required for a 22' wall if the studs are placed 16" on center?

Question 11

A carpenter needs to make 45 right triangles that have a height of 48" and a base measuring 48". How many 4' * 8' sheets of plywood are required for this job?

Question 12

How many sheets of 4' * 8' drywall are required to make 15 pieces that are 3¹/₂' * 4¹/₂'?