Find the Circumference and the Area of the Circle

question 11

Multiple Choice

Find the circumference and the area of the circle. Use the rules for working with measurements.

• A) The circumference is 313 mi, the area is 15,600 mi ².
• B) The circumference is 626 mi, the area is 15,600 mi ².
• C) The circumference is 313 mi, the area is 7,790 mi ².
• D) The circumference is 157 mi, the area is 15,600 mi ².
• E) The circumference is 626 mi, the area is 11,690 mi ².

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Definitions:

Sarcolemma

The cell membrane of a muscle fiber (cell), crucial for muscle contraction and signal transmission.

Muscle Fiber

A single muscle cell, known for its elongated shape, that makes up skeletal muscles and is responsible for contracting to produce movement.

Plasma Membrane

A selectively permeable lipid bilayer that encloses the cytoplasm of a cell, protecting it from the external environment.

Resting Membrane Potential

The voltage difference across the cell membrane when the cell is in an unstimulated, resting state, crucial for the function of nerve and muscle cells.