A circular table has a diameter of 42 inches. What is the measurement of the area in square inches? Round the nearest whole number (no decimals).
since d=2r, r=21
A = πr^2 = 441π = 1385.44
1345 is the answer
formula A=πr2, d=2r
A=1
4πd2=1
4·π·422≈1385
nice job oobleck
To find the area of a circle, you can use the formula A = πr^2, where A represents the area and r represents the radius of the circle.
In this case, the diameter of the table is given as 42 inches. The radius, which is half the diameter, can be calculated by dividing the diameter by 2:
r = 42 inches / 2 = 21 inches
Now that we have the radius, we can substitute it into the formula to find the area:
A = π(21 inches)^2
To calculate the area, we need to use the value of π, which is approximately 3.14. Substituting in the values, we get:
A = 3.14 * (21 inches)^2
A = 3.14 * 441 square inches
A ≈ 1382.74 square inches
Rounding to the nearest whole number, the measurement of the area of the circular table is approximately 1383 square inches.