Question

A rectangle has an area of 104 square centimeters and a width of 8 centimeters. What is the perimeter?

13 centimeters
26 centimeters
34 centimeters
42 centimeters

Answer 1

`\huge\boxed{\sf P = 42 \ cm}`

Explanation:

Given:

• Area = 104 cm²
• Width = 8 cm

Formulas to be used:

• Area = Length × Width
• Perimeter = 2Length + 2Width

Solution:

Finding length:

Area = Length × Width

104 = Length × 8

Divide 8 to both sides

104/8 = Length

13 cm = Length

Length = 13 cm

Finding Perimeter:

P = 2Length + 2Width

P = 2(13) + 2(8)

P = 26 + 16

P = 42 cm

`\rule[225]{225}{2}`