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Lesson Example Discussion Quiz: Class Homework

Step-3

Title: Find area

Grade: 6-a Lesson: S2-L3

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

Lesson Steps

Step	Type	Explanation	Answer
1	Problem	Find the area of the circle whose radius is 2.5 m.
2	Step	The given radius is	2.5 m
3	Formula:	The area of circle	\$A = πr^2\$
4	Step	Substitute the given values in the formula	\$A = π Ttimes (2.5)^2\$
5	Step	After simplification	\$A = π times 6.25\$
6	Step	After simplification	\$A = 19.625 m^2\$
7	Step	So the area of the circle is \$19.625 m^2\$
8	Sumup	Can you summarize what you’ve understood in the above steps?
9	Choice.A	This is the correct answer because the area is in square meters	\$7.85 m^2\$
10	Choice.B	This is not correct because the units are in centimeters, but the radius was given in meters	\$7.85 cm^2\$
11	Choice.C	This is not correct because the units are in centimeters, but the radius was given in meters	stem;[19.625 cm^2]
12	Choice.D	This is not correct because the calculation was done using meters for the radius, but the result is given in square meters	\$19.625 m^2\$
13	Answer	Option	D
14	Sumup	Can you summarize what you’ve understood in the above steps?

Step

Type

Explanation

Answer

Problem

Find the area of the circle whose radius is 2.5 m.

Step

The given radius is

2.5 m

Formula:

The area of circle

\$A = πr^2\$

Step

Substitute the given values in the formula

\$A = π Ttimes (2.5)^2\$

Step

After simplification

\$A = π times 6.25\$

Step

After simplification

\$A = 19.625 m^2\$

Step

So the area of the circle is \$19.625 m^2\$

Sumup

Can you summarize what you’ve understood in the above steps?

Choice.A

This is the correct answer because the area is in square meters

\$7.85 m^2\$

Choice.B

This is not correct because the units are in centimeters, but the radius was given in meters

\$7.85 cm^2\$

Choice.C

This is not correct because the units are in centimeters, but the radius was given in meters

stem;[19.625 cm^2]

Choice.D

This is not correct because the calculation was done using meters for the radius, but the result is given in square meters

\$19.625 m^2\$

Answer

Option

Sumup

Can you summarize what you’ve understood in the above steps?