MSE2183 Assignment 3 Solutions 2026
UNISA
Question upload your forum 4 responds as you did from last assignments
,QUESTION 1
Participation in Forum 4
Student Number: ___________________________________________
My posts in Forum 4
Other students’ responses/comments
My comments on other students’ posts
, Question 2
Lesson 4 Volume and Area
2.1
A rectangle with sides 𝑎and 𝑏has area:
𝐴 = 𝑎𝑏
The second rectangle has sides:
• 2𝑎
𝑏
•
2
Its area is:
𝑏
𝐴 = (2𝑎) ( )
2
𝐴 = 𝑎𝑏
Since both rectangles have the same area,
For all values of 𝑎 and 𝑏, the two rectangles have equal area.
2.2
A regular dodecagon has 12 equal sides.
Given:
• Side length = 7 cm
Perimeter:
𝑃 = 12 × 7
𝑃 = 84 cm
Answer:
84 cm
2.3 Complete self-assessment 4.1; b) and d)
(a) Equilateral Triangle
UNISA
Question upload your forum 4 responds as you did from last assignments
,QUESTION 1
Participation in Forum 4
Student Number: ___________________________________________
My posts in Forum 4
Other students’ responses/comments
My comments on other students’ posts
, Question 2
Lesson 4 Volume and Area
2.1
A rectangle with sides 𝑎and 𝑏has area:
𝐴 = 𝑎𝑏
The second rectangle has sides:
• 2𝑎
𝑏
•
2
Its area is:
𝑏
𝐴 = (2𝑎) ( )
2
𝐴 = 𝑎𝑏
Since both rectangles have the same area,
For all values of 𝑎 and 𝑏, the two rectangles have equal area.
2.2
A regular dodecagon has 12 equal sides.
Given:
• Side length = 7 cm
Perimeter:
𝑃 = 12 × 7
𝑃 = 84 cm
Answer:
84 cm
2.3 Complete self-assessment 4.1; b) and d)
(a) Equilateral Triangle
