Question

The diameter of a circle is 62cm

by first calculating the radius work out the area of the circle
give your answer in cm² to 1.d.p
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Answer 1

The area of a circle with a diameter of 62 cm is found by halving the diameter to get the radius, which is then squared and multiplied by π (pi) to get the area. The calculated area, rounded to one decimal place, is 3019.5 cm².

Step-by-step explanation:

To calculate the area of a circle with a diameter of 62 cm, we first need to find the radius. The radius (r) is half of the diameter, so for this circle, r = 62 cm / 2 = 31 cm. Next, we use the formula for the area of a circle, which is A = πr². Plugging in the radius, we get A = π * (31 cm)². Calculating this using π as approximately 3.14159, the area A = 3.14159 * (31 cm)² = 3.14159 * 961 cm² = 3019.46819 cm². To one decimal place, the area is 3019.5 cm².

Answer 2

Answer is 3017.5 cm^2
Reason

We know diameter is 62
Radius (r) is 1/2 of diameter so r=31

Formula for area
A= pi r^2
Fill in what we know
A= (3.14) (31^2)
Multiply
A=3017.54
Round to 1 dp
A= 3017.5