Two chords PQ and ST of lengths 6 cm and 10 cm respectively of a circle are parallel to each other and are on the opposite side of its center. If the distance between PQ and ST is 5 cm. Find the radius of the circle. Explain your process /reasoning clearly and thoroughly.

What does the relationship between the mean and median reveal about the shape of the data

Labc is reflected across x = 1 and y = -3. what are the coordinates of the reflection image of a after both reflections?

Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?