Chapter 2: Q50. (page 123)

GEOMETRY The rectangle has a perimeter of P centimeters. Which equation could be used to find the length l of the rectangle?
A. $P = 2.4 l$
B. $P = 2.4 + 2 l$
C. $P = 4.8 + l$
D. $P = 4.8 + 2 l$

Short Answer

Expert verified

Option D. $P = 4.8 + 2 l$ is the correct choice.

Step by step solution

Step 1. Use the definition of a rectangle’s perimeter.

For a rectangle perimeter is the sum of the lengths of all its sides, thus we add two lengths and two breadths to find the perimeter of the rectangle.

Step 2. Find the perimeter.

We are given that the length of a rectangle is l and its width is 2.4cm thus its perimeter can be calculated as:

$\begin{array}{l} P = 2 (l e n g t h + b r e a d t h) \\ P = 2 (l + 2.4) \\ P = 2 l + 4.8 \end{array}$

Thus, Option D. $P = 2 l + 4.8$ is the correct choice.

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GEOMETRY The rectangle has a perimeter of P centimeters. Which equation could be used to find the length l of the rectangle?
A. $P = 2.4 l$
B. $P = 2.4 + 2 l$
C. $P = 4.8 + l$
D. $P = 4.8 + 2 l$

Short Answer

Step by step solution

Step 1. Use the definition of a rectangle’s perimeter.

Step 2. Find the perimeter.

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GEOMETRY The rectangle has a perimeter of P centimeters. Which equation could be used to find the length l of the rectangle?A. P=2.4lB. P=2.4+2lC.P=4.8+lD.P=4.8+2l

Short Answer

Step by step solution

Step 1. Use the definition of a rectangle’s perimeter.

Step 2. Find the perimeter.

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Theoretical and Mathematical Physics

Geometry

Probability and Statistics

Applied Mathematics

Mechanics Maths

Decision Maths

Study anywhere. Anytime. Across all devices.

GEOMETRY The rectangle has a perimeter of P centimeters. Which equation could be used to find the length l of the rectangle?
A. $P = 2.4 l$
B. $P = 2.4 + 2 l$
C. $P = 4.8 + l$
D. $P = 4.8 + 2 l$