Practice with Area and Perimeter

Site: Saylor Academy
Course: GKT101: General Knowledge for Teachers – Math
Book: Practice with Area and Perimeter
Printed by: Guest user
Date: Tuesday, July 1, 2025, 9:53 AM

Description

Complete these exercises and check your answers.

Table of contents

Review

1. Find the area and perimeter of a rectangle with a length of \(12\) inches and a width \(15\) inches.

2. Find the area and perimeter of a right triangle with legs \(3 cm\) and \(4 cm\) and hypotenuse \(5 cm\).

10. Find the area of a square with a diagonal of \(12\) in.



Source: CK-12, https://flexbooks.ck12.org/cbook/ck-12-interactive-geometry-for-ccss/section/1.6/primary/lesson/area-or-perimeter-of-triangles-and-quadrilaterals-geo-ccss/

CK12 License This work is licensed under CK-12 Curriculum Materials License.

Answers

1. Perimeter is \(54  \, inches\) and area is \(180 \, in ^{2}\).

2. Perimeter is \(12 \,   cm\) and area is \(6  \, cm ^{2}\).

10. \(72 \, in ^{2}\) (remember that a square is a rhombus)