15 + 15 + (10 * (1 / 2)) + (10 * (1 / 2)) = 40
Perimeter = 15+10+15+10 = 50 units of measurement.
Add all three sides. Perimeter = 15 + 17 + 10 = 42
if you have the length of one side - plus the perimeter... Divide the perimeter by 2, then subtract the known side - this leaves you with the unknown dimension. For example... Say you have a side length of 10, and a perimeter of 30. 30/2 = 15, subtract 10 from that - and you get the missing measurement of 5.
Two halves of 15 minutes, plus added time.
5t+15
10 + 15 + 20 = 45
The perimeter of a rectangle is calculated by adding up the lengths of all its sides. In this case, the length is 15 centimeters and the width is 10 centimeters. To find the perimeter, you would add up all four sides: 15 cm + 10 cm + 15 cm + 10 cm = 50 cm. Therefore, the perimeter of the rectangle is 50 centimeters.
42
50
25 + 15 + 21 + 10 + 11 = 82
Perimeter of a triangle is given by: sum of the three sides =(10+15+18)cm =43cm Done.
If its length is 15m then its width is 10m because 15+10+15+10 = 50m