Answer:
21.04
Step-by-step explanation:
the 8 is closest to 10 so that would make the 3 a 4.
Answer: 300,000
28
Step-by-step explanation: add all sides together
6x4= 24
x4)+(3x4)=12
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87.92
3.14(a² + ab)
= 3.14 (4² + 4 × 3)
= 3.14 (16 + 12)
= 3.14 × 28
= 87.92
Hope it helps :)
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