Find the area of the circle with diameter 19.4 cm to the nearest tenth. use 3.14 for π. * a.295.4 cm² b.590.9 cm² c.30.5 cm² d.283.2 cm²

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)

If two angles of a triangle have equal measures and the third angle measures 90°, what are the angle measures of the triangle? a. 60°, 60°, 60° b. 45°, 90°, 90° c. 30°, 30°, 90° d. 45°, 45°, 90°

Ineed on this question me get the answer