Can you pls also explain

Step-by-step explanation:

Use the given equation and substitute h with 9:

0.75

Step-by-step explanation:

16t² = 9

t² = 9/16

t = √{9/16}

t = 3/4

t = 0.75 s

The garden is 20 square yards in area

Step-by-step explanation:

First you find the area of the left side of the garden by multiplying 6 x 2, then you multiply 4 x 2 and add the products of those to get 20.

I hope my explanation is good