Lesson Example Discussion Quiz: Class Homework |
Quiz Discussion |
Title: Three-dimensional (3D) shapes |
Grade: 6-a Lesson: S4-L2 |
Explanation: Hello students, let us discuss few problems on this topic with steps and answers provided for each problem. |
Quiz: Discussion in Class
| Problem Id | Problem | Answer |
|---|---|---|
Steps 1 |
Find the total surface area of a cuboid having dimensions as length = 14.5 cm , width = 17cm , height = 22cm? |
A) 1978 sq.cm B) 1879 sq.cm C) 1897 sq.cm D) 1987 sq.cm |
Steps 2 |
A cylindrical pipe has a radius of 15 in and a total surface area of 915 square in. Calculate the height of the pipe. |
A) 8 in B) 3 in C) 6 in D) 5 in |
Steps 3 |
Three metal cubes with edges of 6cm, 8cm, and 10cm respectively are melted together and formed into a single cube. Find the surface area of the new cube. |
A) 750 sq.cm B) 800 sq.cm C) 864 sq.cm D) 725 sq.cm |
Steps 4 |
A conical tank with a radius of 9 meters and a height of 12 meters is to be painted on the inside. Calculate the total surface area of the inside of the tank that needs to be painted. |
A) 201π sq.m B) 261π sq.m C) 210π sq.m D) 216π sq.m |
Steps 5 |
A cube-shaped gift box with an open top. Each side of the cube has a length of 16 m. What is the surface area of the open-top gift box ? |
A) 1208 sq.cm B) 1820 sq.cm C) 1280 sq.cm D) 1028 sq.cm |
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