Surface Area Of Cube Cuboid And Cylinder

Correct answer: cone

Explanation:
The sharpened edge of a pencil forms a shape that is similar to the cone. A cone has a circular base and a pointed apex, which is similar to the shape of a sharpened pencil.

Hence, the sharpened edge of the pencil gives an idea about a cone.

Correct answer: 13.4 cm

Explanation:
The lateral height of a cone is the slant height, which can be found using the Pythagorean theorem.
Given: The formula for the slant height is: Substituting the values:

Hence, the lateral height is approximately 13.4 cm.

Correct answer: 2(lb + bh + lh)

Explanation:
The total surface area (TSA) of a cuboid is the sum of the areas of all six rectangular faces.
A cuboid has:

• 2 faces of size
• 2 faces of size
• 2 faces of size

So, the total surface area is:

Hence, the total surface area is 2(lb + bh + lh).

The total surface area of a cuboid with length , breadth , and height is given by the formula: $ l = 8 b = 3 h = 4 ^2$.