г) Повтори ја постапкага со друг почетен бро). Што забележуваш? 8. Лрапоаголникимастрани: \( a=\frac{15}{4} \mathrm{dm}, b=\frac{9}{4} \mathrm{dm} \). Колку е периметаротна правоаголникот? 9. Пресметај го периметарот на рамнокрак триаголник со основа \( 5,5 \mathrm{~cm} \) и крак 72 mm .

A sector has central angle \( \frac{5}{7} \pi \) and radius 18 . Find the area of the sector. Give your answer in terms of \( \pi \) or as a decimal rounded to two decimal places.

A sector has radius 12 m and area \( 64 \pi \mathrm{~m}^{2} \). What is the measure, in degrees, of the central angle of the sector?

A sector has central angle \( \frac{14}{15} \pi \) and radius 21 . Find the area of the sector. Give your answer in terms of \( \pi \) or as a decimal rounded to two decimal places.

AFerris wheel has a radius r of 24.5 feet. The height of the tower \( t \) is 30.8 feet. The horizontal distance d from the origin to the base of the tower which lies to the right of the origin is 43.7 feet. Find the standard form of the equation of the circle represented by the Ferris wheel. The standard form of the equation of the circle represented by the Ferris wheel is (Do not type units. Type any numbers as decimals. Use the variables \( x \) and \( y \).

A sector has radius 4 and central angle \( 184^{\circ} \). Find the area of the sector. Give your answer in terms of \( \pi \) or as a decimal rounded to two decimal places.