A Circle Has a Radius Of $4$ Cm by How Much Should the Radius Be Reduced So

question 87

Essay

A circle has a radius of $4$ cm. By how much should the radius be reduced so that the area is reduced by a third?

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Definitions:

Voltage-Gated Channel

A type of protein channel in cell membranes that opens or closes in response to changes in electrical membrane potential.

Synaptic Vesicle

Secretory vesicle in the presynaptic terminal containing neurotransmitter substances.

Chemical Synapse

A specialized junction at which a neuron communicates with a target cell across a synaptic cleft using chemical messengers.

Presynaptic Terminal

The end of a nerve fiber where the release of chemicals (neurotransmitters) occurs, enabling the transfer of the signal to another neuron's receptor site.