Sian bought a TV in the January sales which had been reduced by 20 per cent. If she paid £290 for it, what was the original pric
2 answers:
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Answer:
C
Step-by-step explanation:
The central angle is equal to the arc that subtends it, that is 54°
area of sector = area of circle × fraction of circle
A = πr² ×
= π × 10² ×
= 100π × ( cancel 20 and 100 )
= 5π × 3
= 15π cm² → C
