Theta = 210°
r = 4.6/2 = 2.3
Area of circle = pi * r * r
= 3.14 * 2.3 * 2.3 = 16.61
Area of sector =
(theta / 360) * area of circle
= (210/360) * 16.61
= 9.69
She has more than enough space because 19/4 as a mixed number is 4 3/4. The piano will fit in the 5 ft. space. To find out how to make 19/4 a mixed number, you divide the 4 into the 9 and you put the remainder over the divisor.