Find the Missing Side of Square, Rectangle, Triangle & Circle More

Name Grade School
Date Questions10 Score

1
Find the side of a Triangle whose perimeter is 28 in
9 in ? 9 in
Perimeter = 28 in
2
Find the side of a Parallelogram whose perimeter is 18 in
? 3 in6 in3 in
Perimeter = 18 in
3
Find the side of a Pentagon whose perimeter is 15 in
?
Perimeter = 15 in
4
Find the side of a Rectangle whose area is 45 in2
? 5 in
Area = 45 in2
5
Find the side of a Square whose area is 100 in2
?
Area = 100 in2
6
Find the side of a Square whose area is 49 in2
?
Area = 49 in2
7
Find the side of a Rectangle whose area is 60 in2
10 in ?
Area = 60 in2
8
Find the side of a Trapezoid whose perimeter is 18 in
3 in2 in ? 10 in
Perimeter = 18 in
9
Find the Radius of a Circle whose perimeter is 37.68 in2
?
Perimeter = 37.68 in
10
Find the Radius of a Circle whose perimeter is 43.96 in2
?
Perimeter = 43.96 in

Answers Key
Show All Workout
1
Find the side of a Triangle whose perimeter is 28 in
9 in10 in9 in
Perimeter = 28 in
Solution
Perimeter = Sum of the measure of all the sides.
Perimeter = side1 + side2 + side3.
Perimeter = 28 in
side2 = 9 in
side3 = 9 in
To find side3,
side1 = Perimeter - (side2 + side3)
side1 = 28 - (9 + 9)
∴ side1 = 10 in
2
Find the side of a Parallelogram whose perimeter is 18 in
6 in3 in6 in3 in
Perimeter = 18 in
Solution
Perimeter = Sum of the measure of all the sides.
Perimeter = side1 + side2 + side3 + side4.
Perimeter = 18 in
side1 = 6 in
side2 = 3 in
side4 = 3 in
To find side3,
side3 = Perimeter - (side1 + side2 + side4)
side3 = 18 - (6 + 3 + 3)
∴ side3 = 6 in
3
Find the side of a Pentagon whose perimeter is 15 in
3 in
Perimeter = 15 in
Solution
pentagon has 5 sides,and all side have equal length
Perimeter = 5 x side
To find side,
side =
Perimeter5
Perimeter = 15 in
side =
155
∴ = 3 in
4
Find the side of a Rectangle whose area is 45 in2
9 in5 in
Area = 45 in2
Solution
To find length,
Area = 45 in 2
Breadth (b) = 5 in
Area = l x b
l =
Areab
Length (l) =
455
∴ Length (l) = 9 in
5
Find the side of a Square whose area is 100 in2
10 in
Area = 100 in2
Solution
To find side,
Area = 100 in 2
Area = side2
side = √area
side = √100
∴ side = 10 in
6
Find the side of a Square whose area is 49 in2
7 in
Area = 49 in2
Solution
To find side,
Area = 49 in 2
Area = side2
side = √area
side = √49
∴ side = 7 in
7
Find the side of a Rectangle whose area is 60 in2
10 in6 in
Area = 60 in2
Solution
To find breadth,
Area = 60 in 2
Length (l) = 10 in
Area = l x b
b =
Areal
Breadth (b) =
6010
∴ Breadth (b) = 6 in
8
Find the side of a Trapezoid whose perimeter is 18 in
3 in2 in3 in10 in
Perimeter = 18 in
Solution
Perimeter = Sum of the measure of all the sides.
Perimeter = side1 + side2 + side3 + side4.
Perimeter = 18 in
side1 = 3 in
side3 = 10 in
side4 = 2 in
To find side4,
side2 = Perimeter - (side1 + side3 + side4)
side2 = 18 - (3 + 2 + 10)
∴ side2 = 3 in
9
Find the Radius of a Circle whose area is 37.68 in2
6 in
Perimeter = 37.68 in
Solution
To find radius,
Perimeter = 37.68 in
Perimeter = 2 x π x r
Radius (r) =
Perimeter2 x π
Radius (r) =
37.682 x 3.14
; where π = 3.14
∴ Radius(r) = 6 in
10
Find the Radius of a Circle whose area is 43.96 in2
7 in
Perimeter = 43.96 in
Solution
To find radius,
Perimeter = 43.96 in
Perimeter = 2 x π x r
Radius (r) =
Perimeter2 x π
Radius (r) =
43.962 x 3.14
; where π = 3.14
∴ Radius(r) = 7 in

Find the Missing Side of 2D Shapes Worksheet

Find the missing side of 2d shapes (square, rectangle, triangle & circle) worksheet with answers for 6th grade math curriculum is available online for free in printable and downloadable (pdf & image) format. Tap on PRINT, PDF or IMAGE button to print or download this grade-6 geometry worksheet to practice how to find the missing side of square, rectangle, triangle & circle by using perimeter or area.

How to Use this Worksheet

In this sixth grade 2d geometry worksheet, students are required to find the missing side of 2d-shapes such as circle, right angle triangle, rectangle and square by using the area or perimeter formulas. Rearrange the below area and perimeter formulas of 2d-shapes to find the missing side of each shapes in the worksheet. The below is formulas to find the area of
Square = side x side
Rectangle = length x width
Triangle = 1/2 x base x height
Circle = π r2

The below is formulas to find the perimeter of
Square = 4 x side
Rectangle = 2 x (length + width)
Triangle = side 1 + side 2 + side 3
Circle = 2 π r
Trapezoid = side 1 + side 2 + side 3 + side 4
Parallelogram = side 1 + side 2 + side 3 + side 4
Pentagon = 5 x side

Answers Key

Teachers, tutors, parents or students can check or validate the solved questions by using the corresponding answers key which comprises the step by step work on how to find the missing side of square, rectangle, right angle triangle and circle using area or perimeter.

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