- Circle \( A \) has a diameter of approximately 20 inches and an area of approximately 300 inches squared. Which of these could be the area of Circle \( B \) ? A. About 100 inches squared B. About 300 inches squared C. About 900 inches squared D. About 2700 inches squared

\( 16 \quad \) How long is an arc intercepted by the given central angle in a circle of radius 3.97 km ?

19. Бір тузу бойында 13 нукте болса, неше вектор жасауға болады? (A) 156 (B) 160 () 144 () 132

В треугольнике \( A B C \) к стороне \( A B=6 \) см опущена высота, длина которой составила 22 см. Найди площадь этого треугольника и дай ттвет в квадратных сантиметрах.

Examine the graph of the circle at right. Homework Help a. What is the equation of the circle? b. On graph paper, sketch the graph of \( x^{2}+y^{2}=81 \). What is the radius?

\( 1 \leqslant \quad \begin{array}{l}\text { Two gears are adjusted so that the smaller gear drives the } \\ \text { larger one, as shown in the figure. If the smaller gear } \\ \text { rotates through an angle of } 270^{\circ} \text {, through how many } \\ \text { degrees will the larger gear rotate? }\end{array} \)