Lesson Topics Discussion Quiz: Class Homework |
Steps-5 |
Title: Area of 3D shapes |
Grade Lesson s4-l6 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Quiz: Discussion Step
Id | Type | Name | Note |
---|---|---|---|
1 |
Problem |
Find the total surface area of a container in a cylindrical shape whose diameter is 26 cm and height is 18 cm. use value π is 3.14. |
|
2 |
Step |
Given diameter is and the height(h) is |
26 cm and 18 cm |
3 |
Formula |
Radius(r) of the cylinder \$r = (diameter)/2\$. |
|
4 |
Step |
Substitute the value in above formula: |
\$(26)/2\$ r =13cm |
5 |
Formula |
Area of the cylinder: \$A = 2πr(h + r)\$ |
|
6 |
Step |
Plug the values in the area of cylinder formula: |
\$A = 2 \times 3.14 \times 13(18 + 13)\$ \$A = 2 \times 3.14 \times 13(31) = 2530.84\$ |
7 |
Solution |
So, the total surface area of the cylindrical container is 2530 sq cm |
|
8 |
Sumup |
Please summarize steps |
|
Choices |
|||
9 |
Choice-A |
This is incorrect. It’s not the result of the correct calculation |
Wrong 2515 sq cm |
10 |
Choice-B |
This is very close to the correct answer, but slightly off. This might occur due to rounding differences during calculation |
Wrong 2533 sq cm |
11 |
Choice-C |
This option is correct; it matches the calculated value |
Correct 2530.84 sq cm |
12 |
Choice-D |
This is an incorrect option; it’s greater than the correct value |
Wrong 2532 sq cm |
13 |
Answer |
Option |
C |
14 |
Sumup |
Please summarize choices |
Copyright © 2020-2024 saibook.us Contact: info@saibook.org Version: 4.0 Built: 02-September-2025 12:00PM EST