Answer:
942 6/7 cm²
Step-by-step explanation:
Since O = Center of bigger circle, OA = Radius of bigger circle.
∴ Area of smaller circle - Area of bigger circle = Area of shaded part.
∴ Area of smaller circle = 22/7 × 10²
= 22/7 × 100
= 2200/7
= 314 2/7 cm²
∴ Area of bigger circle = 22/7 × 20 ²
= 22/7 × 400
= 1257 1/7 cm²
∴ Area of shaded part = 1257 1/7 - 314 2/7
= 942 6/7 cm²
Answer:
20%
Step-by-step explanation:
Craig got 3 new records and percent increase is change divided my original. Originally Craig had 15 records. 3/15 is 1/5 which is 20%.
Answer:3028
Step-by-step explanation:
Answer: 8
Step-by-step explanation: Think of the 32 in this problem as 32/1.
So rewriting, we have 1/4 × 32/1.
Now, the 4 and 32 cross-cancel to 1 and 8.
So we have 8/1 or just 8.
Answer:
the price of each cd is 13.45
Step-by-step explanation:
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