Perimeter with Missing Sides

Front

What is the formula for calculating the perimeter of a rectangle?

Back

The perimeter (P) of a rectangle is calculated using the formula P = 2(length + width).

Front

If the perimeter of a shape is known, how can you find a missing side length?

Back

To find a missing side length, rearrange the perimeter formula to isolate the missing side. For example, if P = 2(length + width), you can solve for the missing side by substituting the known values.

Front

What is the perimeter of a rectangle with a length of 10 units and a width of 5 units?

Back

The perimeter is P = 2(10 + 5) = 30 units.

Front

In a rectangle, if one side is known and the perimeter is given, how do you find the other side?

Back

Subtract the known side from half of the perimeter. For example, if the perimeter is 36 units and one side is 10 units, the other side is (36/2) - 10 = 8 units.

Front

What is the perimeter of a square with a side length of 4 units?

Back

The perimeter of a square is P = 4 * side length, so P = 4 * 4 = 16 units.

Front

How do you calculate the perimeter of a triangle?

Back

The perimeter of a triangle is the sum of the lengths of all three sides: P = side1 + side2 + side3.

Front

If a rectangle has a perimeter of 50 units and one side is 15 units, what is the length of the other side?

Back

The other side is (50/2) - 15 = 10 units.

Front

What is the relationship between the perimeter and the area of a shape?

Back

The perimeter is the total distance around a shape, while the area is the space contained within it. They are related but measure different properties.

Front

If the perimeter of a shape is 40 units and two sides are 10 units each, what is the length of the remaining two sides?

Back

The remaining two sides must total 20 units. If they are equal, each side would be 10 units.

Front

What is the perimeter of a rectangle with a length of 8 units and a width of 3 units?

Back

The perimeter is P = 2(8 + 3) = 22 units.