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Step-2

Title: Area of 3D shapes

Grade: 8-a Lesson: S1-L6

Explanation: Hello Students, time to practice and review the steps for the problem.

Lesson Steps

Step	Type	Explanation	Answer
1	Problem	Work out the surface area of this cuboid.
2	Step	Given that the height (h) is the width (w) is , the length (l) is	6 m 4 m 5 m
3	Formula:	The formula for the surface area of a cuboid with height "h," width "w," and length "l" is:	Area = 2(lw + lh + wh)
4	Step	Substitute the values	A= 2(54 + 56 + 4 *6) 2(20 + 30 + 24) = 148
5	Step	So, the surface area of this cuboid is	\$148\$ sq.units
6		Answer	B

Step

Type

Explanation

Answer

Problem

Work out the surface area of this cuboid.

Step

Given that the height (h) is

the width (w) is ,

the length (l) is

6 m

4 m

5 m

Formula:

The formula for the surface area of a cuboid with height "h," width "w," and length "l" is:

Area = 2(lw + lh + wh)

Step

Substitute the values

A= 2(5*4 + 5*6 + 4 *6)

2(20 + 30 + 24) = 148

Step

So, the surface area of this cuboid is

\$148\$ sq.units

Answer