Answer:C=6
Step-by-step explanation:C directly proportional to D
C=kD where k=constant
C=32, D=4×4
32=k16
K=32÷16
K=2
Now D=3 and k=2
C=kD
C=2×3
C=6
Answer: c=18
Step-by-step explanation:
C is directly proportional to square of D
C € D2
€ rep directly proportional
C=kd2
K is a constant
C=32
D=4
Substitute
32=k(4^2)
32=k(16)
32=16k
K=32/16
K=2
Since we know our constant k to be 2
Substitute
We are looking for c,when d=3
C=kd2
C=2×(3^2)
C=2×9
C=18
