Given the Formula $L = \pi \left( r _ { 1 } + r _ { 2 } \right) + 2 d , L = 56.97 , d = 5.46 , r _ { 2 } = 6$

question 39

Multiple Choice

Given the formula: $L = \pi \left( r _ { 1 } + r _ { 2 } \right) + 2 d , L = 56.97 , d = 5.46 , r _ { 2 } = 6$ Find $r_ { 1}$ .

• A) \(r _ { 1 } = \frac { L - 2 d } { \pi } - r _ { 2 } = 8.76\)
• B) \(r _ { 1 } = \pi ( L - 2 d ) - r _ { 2 } = 139\)
• C) \(r _ { 1 } = \frac { L - 2 d } { \pi } - r _ { 2 } = 8.65\)
• D) \(r _ { 1 } = \frac { L - 2 d } { \pi } - r _ { 2 } = 8.66\)
• E) \(r _ { 1 } = \frac { L } { \pi } + 2 d - r _ { 2 } = 23.1\)

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Definitions:

Stratum Granulosum

A layer of the epidermis located just above the stratum spinosum, characterized by granular cells that contribute to skin waterproofing.

Stratum Lucidum

A thin, clear layer of dead skin cells in the epidermis found only in areas of thick skin, like the palms and soles.

Melanocyte

A cell located in the bottom layer of the skin's epidermis and in the eye, responsible for producing melanin, the pigment that colors the skin, hair, and eyes.

Epidermis

The outermost layer of the skin, consisting of keratinized, stratified squamous epithelium that functions as a barrier against environmental damages.