To calculate \( 8 \times 28 \):
\[ 8 \times 28 = 224 \]
Now, to find which multiple of 10 is closer to 28, we look at the multiples of 10 around 28:
- The nearest multiple of 10 below 28 is 20.
- The nearest multiple of 10 above 28 is 30.
To determine which is closer, we calculate the differences:
- Difference from 20: \( 28 - 20 = 8 \)
- Difference from 30: \( 30 - 28 = 2 \)
Since 2 is less than 8, the multiple of 10 that is closer to 28 is 30.