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Lesson Example Discussion Quiz: Class Homework

Step-2

Title: Find the length and perimeter

Grade: 6-a Lesson: S2-L4

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

Lesson Steps

Step	Type	Explanation	Answer
1	Problem	Find the breadth of the rectangular plot of land whose area is \$620 m^2\$ and whose length is 45 m. Find its perimeter.
2	Step	The given values	A = 620 sq.cm and l = 45 m
3	Formula:	The area of a rectangle is	\$A = length times breadth\$
4	Step	Now substitute the value	\$620 = 45 times b\$
5	Step	After simplification	b = 13.78 m
6	Formula:	The perimeter of a rectangle is	P = 2[ length + breadth]
7	Step	Now substitute the value	P = 2[45 + 13.78]
8	Step	After simplification	P = 2[ 58.78]
9	Step	After simplification	P = 117.56 m
10	Step	The perimeter of the rectangle plot is P = 117.56 m
11	Sumup	Can you summarize what you’ve understood in the above steps?
12	Choice.A	This is not correct because it does not match the calculated perimeter	171.65 m
13	Choice.B	This is correct for the perimeter of the rectangular plot	117.56 m
14	Choice.C	This is not correct because it does not match the calculated perimeter	171.56 m
15	Choice.D	This is not correct because it does not match the calculated perimeter	117.65 m
16	Answer	Option	B
17	Sumup	Can you summarize what you’ve understood in the above steps?

Step

Type

Explanation

Answer

Problem

Find the breadth of the rectangular plot of land whose area is \$620 m^2\$ and whose length is 45 m. Find its perimeter.

Step

The given values

A = 620 sq.cm and l = 45 m

Formula:

The area of a rectangle is

\$A = length times breadth\$

Step

Now substitute the value

\$620 = 45 times b\$

Step

After simplification

b = 13.78 m

Formula:

The perimeter of a rectangle is

P = 2[ length + breadth]

Step

Now substitute the value

P = 2[45 + 13.78]

Step

After simplification

P = 2[ 58.78]

Step

After simplification

P = 117.56 m

Step

The perimeter of the rectangle plot is P = 117.56 m

Sumup

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

Choice.A

This is not correct because it does not match the calculated perimeter

171.65 m

Choice.B

This is correct for the perimeter of the rectangular plot

117.56 m

Choice.C

This is not correct because it does not match the calculated perimeter

171.56 m

Choice.D

This is not correct because it does not match the calculated perimeter

117.65 m

Answer

Option

Sumup

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