A sculpture is made of solid brass in the shape of a cone. The sculpture is 90 inches tall, and its base has a radius of 6 inches. If brass costs \( \$ 0.55 \) per cubic inch, how much did the brass for the sculpture cost? Use 3.14 for \( \pi \), and do not round your answer.

How do you calculate the circumference of a semicircle with a radius of 5 units?

Eine Halteverbotstafel ist 2.40 m hoch. Sie wift zu einer bestimmten Tageszeit einen Sch von 3.60 m a Wie lange ist zu dieser Tageszeit der Schatten des Parkplatzpfostens, der 1.20 m hoch i, b Wie lange ware dein Schatten zu dieser Togeszeit?

Determina le equazioni delle rette che passano per il punto \( P(-3 ; 1) \) e che formano un angolo di \( 45^{\circ} \) con la retta di equazione \( 4 x-2 y+3=0 \). \[ [y+3 x+8=0 ; 3 y-x-6=0] \]

In two isosceles triangles, theargles at the verter where two equal sides meet are equal. Are the triangles congruent? Give reason(s) for yo if/

\( A B \) xercice 1: est un point de \( (L) \). 1- Quel est le symétrique de \( A \) par rapport à (L) ? 2- Quel est le symétrique de \( B \) par rapport à (L)? 3- Quel est le symétrique de \( C \) par rapport à (L) ?