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:

Cambrian

A geological time period occurring approximately 541 million years ago, notable for the Cambrian Explosion, a significant increase in the diversity of life on Earth.

Oldest Vertebrate Trackways

The earliest known fossilized paths made by the locomotion of vertebrates, providing insights into prehistoric behavior and environments.

Fossil Record

The collection of fossils that has been gathered, providing evidence about the history of life and past environments on Earth.

Fungi Fossils

Remnants or impressions of ancient fungi that have been preserved in the geological record.