Answer:
Ix = Iy =
Radius of gyration x = y =
Step-by-step explanation:
Given: A lamina with constant density ρ(x, y) = ρ occupies the given region x2 + y2 ≤ a2 in the first quadrant.
Mass of disk = ρπR2
Moment of inertia about its perpendicular axis is . Moment of inertia of quarter disk about its perpendicular is
.
Now using perpendicular axis theorem, Ix = Iy = =
.
For Radius of gyration K, equate MK2 = MR2/16, K= R/4.
Answer:
<em>Donna will have to pay $67.985125 at the register, including the 7% sales tax.</em>
Step-by-step explanation:
Donna bought 3 pairs of pants for $28.50 each.
So, the cost for 3 pair of pants dollars.
She also bought a necklace for $12.25
Thus, the cost for her entire purchase will be: dollars.
She received a discount of 35% off her entire purchase. So, the amount of discount dollars.
Thus, the total selling price will be: dollars.
Percentage of sales tax is 7%. So, the amount of sales tax dollars.
Thus, the total amount Donna have to pay at the register dollars.