Answer:
p = 8
Step-by-step explanation:
If p is inversely proportional to the square of q,
Mathematically
p ∝ 1/q²
p = k × 1/q²
p = k/q²
p is 18 when q is 2,
We find k
18 = k/2²
Cross Multiply
k = 18 × 2²
k = 72
Determine p when q is equal to 3
Hence,
p = k/q²
k = 72, q = 3
p = 72/3²
p = 72/9
p = 8
