Given the diameter of the surface of the clock, the area of the surface of the alarm clock is 3846.5cm².
<h3>What is the area of the alarm clock?</h3>
Note that: Area of a circle is expressed as;
A = πr²
Where r is radius and π is constant pi ( π = 3.14 )
Given that;
- Diameter d = 70cm
- Radius r = d/2 = 70cm/2 = 35cm
- Area = ?
A = πr²
A = 3.14 × ( 35cm )²
A = 3.14 × 1225cm²
A = 3846.5cm²
Therefore, given the diameter of the surface of the clock, the area of the surface of the alarm clock is 3846.5cm².
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The answer is D.
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