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# Mathematical Literacy 4 Module 2 Part 2

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### Mathematical Literacy 4 Module 2 Part 2

1. 1. 2. IDENTIFY AND USE INFORMATION FROM DIFFERENT REPRESENTATIONS OF RELATIONSHIPS TO SOLVE PROBLEMS IN THE WORKPLACE <ul><li>At the end of this outcome, you will be able to: </li></ul><ul><ul><li>Identify and select information from different representations of relationships to solve problems </li></ul></ul><ul><ul><li>Use and develop formulae with confidence </li></ul></ul>
2. 2. Activity 10 <ul><li>Solve the following equations by logic: </li></ul><ul><li>14t =28 What is the value of t </li></ul><ul><li>x / 1000 = 56 What is the value of x </li></ul><ul><li>V = (28)(160)(17) What does V stand for and what is its value? </li></ul><ul><li>6500 = (8)(25)(h) What does the “h” stand for and what is its value? </li></ul>2 56 000 Volume 76 160 units 3 Height 32.5 units
3. 3. Activity 11 <ul><li>Select the correct formula from the given table and then calculate the unknown value by using the given substitution values. </li></ul><ul><li>a. SI if P=R20 000; t = 10 years and r =15% </li></ul><ul><li>b. S if d = 42.2km at t=2hrs25min </li></ul><ul><li>c. Volume of a tank if r of the base = 2.5m and the height of cylinder =9.25m </li></ul>SI = R30 000 S = 17, 46 km.h -1 181.62m 3
4. 4. Activity 11 <ul><li>Circumference if a circle in centimetres if r=22 inches (1 inch = 2.54cm) </li></ul>351.10cm
5. 5. Activity 11 <ul><li>V if L=100cm; b=7cm and h=250mm </li></ul>17500 cm 3
6. 6. Activity 11 <ul><li>P if L=75m and b=2500cm </li></ul>200cm
7. 7. Activity 11 <ul><li>Degrees C if F=185F </li></ul>85º
8. 8. Activity 11 <ul><li>Select the correct formula from the given table to calculate the following by substituting the given values: </li></ul><ul><li>a. Calculate the average speed of an aircraft that takes 3 1/8 hours to fly 2038.24km </li></ul>652.24km.h -1
9. 9. Activity 11 <ul><li>Calculate the volume if a cylinder with radius 1 7/8m and the height 6.4m </li></ul>70.69m 2
10. 10. Activity 11 <ul><li>c. Convert 83 degrees Celsius to degree Fahrenheit </li></ul>181.4 F
11. 11. Activity 11 <ul><li>d. What is the total external surface area of a cylinder, which has a radius of 125cm and a height of 1350mm? Give the answer in square metres. </li></ul>204 203. 52 cm 2 = 20.42m 2
12. 12. Activity 11 <ul><li>e. How many cubic metres of water is there in a swimming pool which is 25 metres long, 7 metres wide and 2,25 metres deep? </li></ul>393.75m 3 = 393.75 tons of water
13. 13. Activity 11 <ul><ul><li>f. If you borrow R1800 from a friend and he charges you simple interest at a rate of 7% per year, calculate the amount you have to repay the friend after 62 months. </li></ul></ul>R651
14. 14. Activity 11 <ul><ul><li>g. What is the length of fencing that a farmer has to buy to fence his farm, which is 2,8km long and 1850m wide? </li></ul></ul>9,30 km of fence