Perimeter ProwlerTally Crew · numbers, fractions, measurement and shapes

A clockwork cat that walks the edges of things: perimeter, area and circles.

Perimeter, Area and Circles

Perimeter, area and circles. In MathBound, the free Algebra I adventure game, Perimeter Prowler asks these problems, and the only way past is to solve them.

Part of Solving Linear Equations: chapter 2 of the standard course.

Play this battle free

10 questions, no sign-up, nothing saved. Climbs from the basics to harder questions.

What you will practice

Triangles. Solve for a missing angle given two other angles.
Rectangles. Solve for perimeter or area given length and width.
Circles. Calculate circumference or area given the radius or diameter.

Worked examples

Made by the game’s own question engine. Try each one, then open its steps.

Example 1 · Triangles

In

a

triangle,

one

angle

is

4

times

the

smallest

angle,

and

the

third

angle

is

4 2^{\circ}

more

than

the

smallest.

What

is

the

smallest

angle,

in

degrees?

$30$
$37$
$27.6$
$23$

Show the worked steps

$Let$ $the$ $smallest$ $be$ $x : x + 4 x + (x + 42) = 180.$
$6 x = 138,$ $so$ $x = 23 .$

Answer: $23$

Example 2 · Rectangles

Find

the

area

of

a

square

with

sides

of

10

cm .

$20$ $cm^{2}$
$110$ $cm^{2}$
$100$ $cm^{2}$
$40$ $cm^{2}$

Show the worked steps

$A = s^{2} = 10 \cdot 10 = 100$ $cm^{2} .$

Answer: $100$ $cm^{2}$

Example 3 · Circles

Find

the

circumference

of

a

circle

with

radius

14 .

Use

π = \frac{22}{7} .

$28$
$616$
$88$
$44$

Show the worked steps

$C = 2 π r = 2 \cdot \frac{22}{7} \cdot 14 .$
$C = 88 .$

Answer: $88$

Where it is in your textbook

Textbook	Lessons
Standard course	2.7, 6.4
Big Ideas Math Algebra 1	1.2
Big Ideas Math Algebra 1 (2022)	1.2
Carnegie Learning Algebra I	M2 3.5
CPM Core Connections Algebra	4.3.1
CPS Skyline Algebra	5.8-5.9
enVision Algebra 1	4-2
enVision Algebra 1 (2024)	4-2
Eureka Math Algebra I (EngageNY)	1.24
Glencoe Algebra 1	0-7, 0-8, 6-5
HMH Into Algebra 1	9.4
Holt McDougal Larson Algebra 1	1.5, 6.2, 6.3
Illustrative Mathematics Algebra 1 (v.360)	2.18-2.19
Math Nation Algebra 1 (Florida B.E.S.T.)	5.11
Open Up NC Math 1 (MVP)	8.4
OpenStax Elementary Algebra 2e	3.4, 5.4
Pearson Algebra 1 Common Core	6-4
Reveal Algebra 1	7-4
SpringBoard Algebra 1	17

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