Geometry - Area and Perimeter

Front

What is the formula for the perimeter of a triangle?

Back

The perimeter of a triangle is the sum of the lengths of its sides: P = a + b + c.

Front

How do you find the area of a parallelogram?

Back

Area = base × height (A = b × h).

Front

If a rectangle has a length of 15 feet and a width of 21 feet, what is its perimeter?

Back

Perimeter = 2(length + width) = 2(15 + 21) = 72 feet.

Front

What is the formula for the area of a circle?

Back

Area = πr², where r is the radius.

Front

How do you calculate the perimeter of a rectangle?

Back

Perimeter = 2(length + width).

Front

What is the relationship between area and perimeter?

Back

Area measures the space inside a shape, while perimeter measures the distance around it.

Front

What is the formula for the area of a triangle?

Back

Area = ½ × base × height (A = ½bh).

Front

How do you find the height of a parallelogram if you know the area and base?

Back

Height = Area / base (h = A / b).

Front

What is the formula for the perimeter of a circle (circumference)?

Back

Circumference = 2πr, where r is the radius.

Front

What does 'square feet' measure?

Back

Square feet measure area, representing a square that is 1 foot on each side.