A smaller metallic washer is of 7 mm radius with the hole of 3.5 mm radius. What is the area of the washer
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Answer:
115.5 mm²
Step-by-step explanation:
R = 7 mm
r = 3.5 mm
Area of Washer = πR² - πr²
Area of Washer = ( 22/7 × 7 × 7 ) - ( 22/7 × 3.5 × 3.5 )
Area of Washer = 154 - 38.5
Area of Washer = 115.5 mm²
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