Answer:
Step-by-step explanation:

A = 20 (5x4 = 20)
b = 9 (36/4 = 9)
Answer:
0.15
Step-by-step explanation:
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Answer:
<h2>9.656cm</h2>
Step-by-step explanation:
Applying SOH CAH TOA
The opposite to the angle 44° is the height
let the height be x meters
The distance from the both to the lighthouse is 110 meters which is the adjacent
Applying Tan ∅= opp/adj
The equation used to find the height is Tan ∅= opp/adj

The height is 9.65cm
First term a1=10 & r=0.5 & n=4
The formula to find the term =a(n) = a(1)*(r)^(n-1)
a(4th)=10*(0.5)^3 =1.25
proof:
a1=10
a2=10*0.5=5
a3= 5*0.5 = 2.5
a4= 2.5*0.5=1.25