Answer:
160π cm²
Step-by-step explanation:
The area of the shaded region is
area of outer circle - area of inner circle
A = πr₁² - πr₂²
r₁ is the radius of the outer circle = 10 + 3 = 13 cm
r₂ is the radius of the inner circle = 3 cm
A = π × 13² - π × 3²
= π(169 - 9) = 160π cm² ≈ 502.65 cm² ( to 2 dec. places )
The answer is right below:
Answer: 217.6
Step-by-step explanation:
64% is a fraction of 100, so it would be 64/100.
Multiply that by 340.

You can also do 340 * 0.64 for the same result.