Free Printable Day 37 CW

1.

$a^2+\ b^2\ =\ c^2$

The Pythagorean Theorem applies to a right triangle. It can be written as

c\ =\ \sqrt{a^2\ +\ b^2}

where a and b are the lengths of the legs and c is the hypotenuse. Find the measure of the hypotenuse when the legs measure 5 and 12.

(a)

2.

Convert 25 degrees Celsius into Fahrenheit using the formula where C stands for the degrees Celsius.

F\ =\ 1.8C\ +\ 32

a)

57 degrees

b)

58 degrees

c)

77 degrees

d)

46 degrees

3.

The formula below gives the time taken to roast a chicken:

T = 2M + 0.5

where T = time taken in hours, M = mass in kg. Find the time taken to roast a chicken with a mass of 3kg.

a)

6.5 hours

b)

23.5 hours

c)

5.5 hours

d)

5 hours

4.

Using the formula

find the volume of this figure when r = 4.5 and h = 20. What is its volume?

a)

$V=424.12\ mm^3$

b)

$V=540\pi\ mm^3$

5.

Use the formula

V=\frac{4}{3}\pi r^3

to find the volume of the figure when r=2.8. What the volume?

a)

$V=91.95\ m^3$

b)

$V=53.75\ m^3$

6.

Use the formula $b_1=13$ to find the area of the figure when , $b_2=38$ and $h=32.7$ . What is its area?

a)

$A=815.68\ m^2$

b)

$A=833.85\ m^2$

7.

Use the formula to find the surface area of the figure when l=7.4, p=20 and B=25. What is its surface area?

a)

b)

$SA\ =\ 99\ in^2$

8.

Last year, 2,376 people attended a summer music festival. This year, attendance was 2,950. What was the percent of change in attendance to the nearest whole percent?

a)

Increase 24%

b)

Increase 19%

c)

Decrease 24%

d)

Decrease 19%

9.

One week, 72 people got a speeding ticket. The next week, only 36 people got a speeding ticket. What is the percent of change in the speeding tickets?

a)

Increase 50%

b)

Decrease 50%

c)

Increase 1%

d)

Decrease 1%

10.

Ann works in a supermarket for $10.00 per hour. She received a raise to $12.00. What is the percent of change in her hourly wage?

a)

Increase 16.67%

b)

Decrease 16.67%

c)

Increase 20%

d)

Decrease 20%

11.

A video game was $60 at Target in December. Now its costs $45. What was the percent decrease in price?

a)

15%

b)

30%

c)

25%

d)

50%

12.

The number of people signed up for a bus trip increased from 32 to 45. What is the percent increase? Round to the nearest percent.

a)

52%

b)

41%

c)

42%

d)

45%

13.

Mrs. Brock has 35 students in her science class. If her class increases to 42 students next year, what will be the percent of change?

a)

20%

b)

75%

c)

93%

d)

33%

14.

The Polar Express movie is $12 and it will be on sale for $8.What is the percent of change if the cost decreased $4?

a)

15%

b)

33%

c)

10%

d)

32%

Day 37 CW - 8.4: Formulas

Total questions: 14

Worksheet time: 2hrs 30mins

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