Answer:
if 28 cm is the radius then:
area = 2461.76 cm²
if 28 cm is the diameter then:
area = 615.44 cm²
Step-by-step explanation:
area = πr² = (3.14)(28²) = 2461.76 cm²
1/4 of a mile times 9 equals 9/4 miles in total.
The horses time was 2.5 minutes.
Her average speed is distance/time.
9/4*1/2.5=9/10
Her average speed was 9/10 of a mile per minute.
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