I will give the brainliest if you help me find the diameter

d = 4 in

Step-by-step explanation:

Diameter is just the radius multiplied by 2. So since we know the radius is 2, just take double of that.

d = 2(2) = 4

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

if i put something wrong your not gonna like it so rather not say nothing.