Finding the Inductor in an RL Circuit

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Homework Statement

I'm trying to find the inductor

RL Circuit:
Resistor (22Ω), Inductor , Function Generator
Resistance (Ω): 24.7 Ω 50

RL Circuit Half-Life: 64.00µs

RLC Circuit, Resonance:
Resistor (1000Ω), Inductor , Function Generator
Resistance (Ω): 1080 Ω 50

Capacitance: 11.63µf
Sine Wave Frequency at Resonance (voltage plots): 1.960 Hz
Sine Wave Frequency at Resonance (Lissajous figures): 550 Hz

Homework Equations

I'm not sure since there are so many on my lab sheet, but is it: t 1/2= 0.693(L/R)

The Attempt at a Solution

rearrange to (R* t 1/2)/0.693= L ?

 

[member 553083]

For the RL circuit, (22* 64.00µs)/0.693= 79.69µHFor the RLC Circuit, (1000* 11.63µf)/0.693= 8.22mH