Answer:
47.12
Step-by-step explanation:
C=2πr=2·π·7.5≈47.12389
This looks like a deformed pentagon anyways angle sum of pentagon 540
so u just to minus everything off 540
540-121-100-108-102
=109
(7 & 10), bc 10-7=3 and 10+7=17
Answer:
1820
Step-by-step explanation:
The sum of the first n terms of a geometric series with common ratio r and first term a is:
a(1-r^n)/(1-r). Plugging this in 5(1-3^6)/(1-3)=1820
