The volume of a cylinder with height \( h \) and radius \( r \) can be found using the formula \( V=\pi r^{2} \). Find the volume of a cylinder with radius 9 feet and height 6 feet. \( \mathrm{ft}^{3} \)

A cylinder with a radius of 4 cm and a height of 9 cm has the same volume as a cone with a radius of 3 cm . What is the height of the cone? A. 12 cm B. 16 cm D. 36 cm D. 48 cm .

Se sabe que el foco de una parábola se encuentra en el punto ( \( 57 ; 15 \) ) y que el vértice de la misma se encuentra en el punto ( \( 21 ; 15 \) ). Determinar la ecuación que representa la parábola y en base a ella calcular el valor de la coordenada " \( x \) " de un punto de la curva del que se sabe que su coordenada \( y=37 \).

WJEC June 2017 Q6 The coordinates of the points \( F \) and \( G \) are \( (8,20) \) and \( (-4,10) \) respectively. (a) Calculate the length of the line FG. Express your answer as a surd in its simplest form, \( n \sqrt{m} \).

Define la diferencia entre un arco mayor y un arco menor en un círculo.

Circle \( P \) has a radius of \( r \) and circle \( Q \) has a radius twice as large. How many times greater is the area of circle \( Q \) than the area of circle \( P \) ? A. 2 B. \( 2 r \) C. 4 D. \( 4 r \)