a swimming pool is made in the shape of a semi-circle the length of the straight side is 10 meters find the total lenght of the perimeter
2007-11-27 06:39:47 · 4 answers · asked by genv 1 in Science & Mathematics ➔ Mathematics
The circumference of a *full* circle is π * d which would be 10π. But in your case you have a semi-circle, so the circular side of the pool would be half of this (5π). To this you need to add the straight side which is 10.
The total perimeter is given by:
5π + 10
≈ 25.7 meters
2007-11-27 06:44:17 · answer #1 · answered by Puzzling 7 · 1⤊ 0⤋
perimeter of semicircle = diameter + length of border arc
= 10m + 1/2 of preimeter of circle
= 10m + 1/2 * diameter * pi
= 10m + 1/2 * 10* 3.142
= 10m + 15.71m
= 25.71m
2007-11-27 14:55:35 · answer #2 · answered by cy chuks 1 · 0⤊ 0⤋
Total length of the perimeter
= diameter(pi/2 + 1)
= 10m*(3.141/2 + 1)
= 10m*(1.5705 + 1)
= 10m*2.5705
= 25.7050m
2007-11-27 14:49:21 · answer #3 · answered by sv 7 · 0⤊ 0⤋
(pi*10)/2
3.14*10/2
31.4/2
15.7
2007-11-27 14:44:15 · answer #4 · answered by Librarian 3 · 0⤊ 3⤋