What is the answer to 2ab when a=5 and b=3

30

Step-by-step explanation:

1. Substitute - 2 x 5 x 3

2. Solve - 30

30

Step-by-step explanation:

because2×5×3=30

10×3=30

80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh