Acircles diameter matches the side length of a square. what percent of the square's area is the circle's area?

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

10 points? me . its important ‼️‼️

Solve these problems: 1.what is the perimeter of an equilateral triangle with sides measuring 6cm? 2. a regular pentagon has sides measuring 3.2 cm. what is its perimeter? 3. a regular decagon has sides of 3.5mm . what is it’s perimeter? 4. a regular octagon has a perimeter of 64cm. what is the length of one of the sides? 5. a regular hexagon has a perimeter of 72mm . what is the length of one of the sides? 6. what is the perimeter of a rhombus with sides measuring 11m?