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BNU1501 Assignment 03 Semester 01 2020 Suggested Solutions

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BNU1501 Assignment 03 Semester 01 2020 Suggested Solutions with workings.

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  • April 7, 2020
  • 8
  • 2019/2020
  • Answers
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BNU1501
Basic Numeracy
Department of Decision Sciences
Assignment 03 for Semester 01 (compulsory)
Unique Number 532525




Questions 1 and 2 are based on the following information:

Consider the following figure:




Question 1

The perimeter of the gray shaded figure is

, [1] 50 cm
[2] 32 cm
[3] 37 cm
[4] 31 cm

Answer:

The perimeter C of a figure is the distance around the edge or boundary of a figure (the length of the
boundary).

5𝑐𝑚 + (6,5𝑐𝑚 × 2) + (19𝑐𝑚 − 12𝑐𝑚) + (19𝑐𝑚 − 12𝑐𝑚)
5𝑐𝑚 + 13𝑐𝑚 + 7𝑐𝑚 + 7𝑐𝑚
32𝑐𝑚
Question 2

The combined area of the gray shaded figure and the figure shaded with black lines is

[1] 30 cm2
[2] 50 cm2
[3] 32 cm2
[4] 65 cm2

Answer:

Triangle:

1
𝐴 = 2 × 𝑏𝑎𝑠𝑒 × ℎ𝑒𝑖𝑔ℎ𝑡
1
2
× (5 × 6)
1
2
(30)

15𝑐𝑚2
Rectangle:
𝑙×𝑤
5×7
35𝑐𝑚2
Therefore:
(15 × 2) + 35
30 + 35
65cm2

Question 3

Round your answer to two decimal digits. Find the volume of a rectangular prism which is 60 cm
long, 35 cm wide and 10 cm high. The answer, converted to litres, is

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