a circular carpet of diameter 1.4 m is spotted in the centre with a 20 CM strip border find the area of the stripped portion up the carpet to the nearest CM square
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Answer:
7542.86 cm²
Step-by-step explanation:
area of the stripped portion = area of the whole carpet - area of the inner portion
Diameter of carpet = 1.4 m = 140 cm
Radius = 140/2 = 70 cm
Area of whole carpet = πr²
= 22/7*70*70
= 15400 cm²
Radius of inner portion = 70 - 20 = 50 cm
Area of inner portion = πr²
22/7*50*50
= 7857.14 cm²
Area of stripped portion = 15400 - 7857.14
= 7542.86 cm²
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