Geo CH 1.7 Area and Perimeter of circles, kites, trapezoids, etc

Front

What is the formula for the area of a circle?

Back

Area = πr², where r is the radius of the circle.

Front

How do you calculate the circumference of a circle?

Back

Circumference = 2πr, where r is the radius.

Front

What is the formula for the area of a semicircle?

Back

Area = (1/2)πr², where r is the radius.

Front

Define a kite in geometry.

Back

A kite is a quadrilateral with two distinct pairs of adjacent sides that are equal.

Front

What is the formula for the area of a kite?

Back

Area = (d1 * d2) / 2, where d1 and d2 are the lengths of the diagonals.

Front

What is the formula for the area of a trapezoid?

Back

Area = (1/2)(b1 + b2)h, where b1 and b2 are the lengths of the bases and h is the height.

Front

How do you find the height of a parallelogram if the area is known?

Back

Height = Area / base.

Front

What is the relationship between the radius and diameter of a circle?

Back

Diameter = 2 * radius.

Front

How do you find the area of a sector of a circle?

Back

Area = (θ/360) * πr², where θ is the angle in degrees and r is the radius.

Front

What is the formula for the area of a triangle?

Back

Area = (1/2) * base * height.