area and perimeter of triangles

Front

What is the formula to calculate the perimeter of a triangle?

Back

The perimeter of a triangle is calculated by adding the lengths of all three sides: P = a + b + c.

Front

What is the formula to calculate the area of a triangle?

Back

The area of a triangle is calculated using the formula: A = 1/2 * base * height.

Front

If a triangle has sides of lengths 5 cm, 7 cm, and 8 cm, what is its perimeter?

Back

The perimeter is 5 cm + 7 cm + 8 cm = 20 cm.

Front

If a triangle has a base of 10 cm and a height of 5 cm, what is its area?

Back

The area is 1/2 * 10 cm * 5 cm = 25 cm².

Front

What does 'perimeter' mean in relation to shapes?

Back

Perimeter is the total distance around the outside of a shape.

Front

What does 'area' mean in relation to shapes?

Back

Area is the amount of space inside a shape.

Front

If Jose walks around a triangular park with a perimeter of 17 units, how far does he walk in 3 trips?

Back

He walks 3 * 17 units = 51 units.

Front

If Robert's triangular garden has an area of 8.2 in², how much mulch does he need?

Back

He needs 8.2 in² of mulch.

Front

What is the perimeter of a rectangle with a length of 15 feet and a width of 21 feet?

Back

The perimeter is 2 * (15 ft + 21 ft) = 72 feet.

Front

If Macy's triangular scarf has an area of 14.7 cm², how much fabric does she need?

Back

She needs 14.7 cm² of fabric.