Sue wants to use mental math to solve 7 times 53. What is an expression that she can use?
2 answers:
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Answer:
22.2 ft²
Step-by-step explanation:
The area (A) of a sector is calculated as
A = area of circle × fraction of circle
= πr² ×
= π × 7.13² ×
= ≈ 22.2 ft² ( nearest tenth )