A student grew 4 seeds in a bag. The height of the plant from the first seed was 12 cm. The other 3 seeds grew plants that were 15 cm, 7 cm, and 9 cm. What was the average height of the plants from the seeds in this bag? Round your answer to the nearest tenth.

10.8 cm is the average

Step-by-step explanation:

(12 + 15 + 7 + 9)/4 = 10.8

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2

answer: 30

step-by-step explanation: its 30 because im a basketball player and stephen curry hits most of his shots so if you put 30 you might make the shot goodluck