2 The diameter of the firepit seating is 400 cm . Write down the radius in meters. 3 The length of the frepit seating is \( \frac{3}{4} \) of the circumference of a circle Determine the length of the firpit seating if the circumference of the full circle is 8,5 metres.

Solve \( (x+4)^{2}-9=0 \), where \( x \) is a real number. Simplify your answer as much as possible. If there is more than one solution, separate them with commas. If there is no solution, click "No solution."

Water is flowing at a rate of \( 10 \mathrm{~cm}^{3} \) per second into a cylindrical can of diameter 30 cm Find the rate at which the water is rising in \( \mathrm{cm} / \mathrm{s} \).

10. Andrés trabaja ocho horas al dia en un almacén de materiales para construcción El lunes, en cada una de las dos primeras horas, registró una compra de \( 18,7 \mathrm{~kg} \) de cemento, mientras que en cada una de las siguientes horas solo registra \( 4,7 \mathrm{~kg} \). ¿Cuántos kilogramos de cemento registró Andrés ese dia en el almacén?

A quadratic function \( f(x) \) is hidden from view. You must find the \( y \)-intercept(s) of \( f(x) \) and write the answer(s) in the form \( (x, y) \). Choose the form of the quadratic function \( f(x) \) that you would like to see in order to answer the question most efficiently. Form: Standard Form \( \quad f(x)=2 x^{2}-4 x-48 \)

1. Resuelve las siguientes integrales, empleando el método de sustitución. a. \( \int \frac{x^{4}}{\sqrt{\left(1-x^{2}\right)^{3}}} d x \) ELABORA AOUI TUS OPERACIONES