Area and Perimeter/Circumference

Front

What is the formula for the circumference of a circle?

Back

The circumference (C) of a circle is calculated using the formula C = 2πr, where r is the radius.

Front

How do you calculate the area of a circle?

Back

The area (A) of a circle is calculated using the formula A = πr², where r is the radius.

Front

What is the relationship between diameter and radius?

Back

The diameter (d) of a circle is twice the radius (r), so d = 2r.

Front

What is the formula for the perimeter of a rectangle?

Back

The perimeter (P) of a rectangle is calculated using the formula P = 2(l + w), where l is the length and w is the width.

Front

How do you find the area of a rectangle?

Back

The area (A) of a rectangle is calculated using the formula A = l × w, where l is the length and w is the width.

Front

What is the formula for the perimeter of a triangle?

Back

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

Front

How do you calculate the area of a triangle?

Back

The area (A) of a triangle can be calculated using the formula A = 1/2 × base × height.

Front

What is the formula for the circumference of a circle in terms of diameter?

Back

The circumference (C) can also be calculated using the formula C = πd, where d is the diameter.

Front

What is the formula for the area of a square?

Back

The area (A) of a square is calculated using the formula A = s², where s is the length of a side.

Front

How do you find the missing side length of a polygon when given the perimeter?

Back

To find the missing side length, subtract the sum of the known side lengths from the total perimeter.