... ..Help Please.

it grew by 240 mm

Step-by-step explanation:

When she planted the tree in April, the height was 33 cm. We would convert centimeters to millimeters.

1 cm = 10 mm

33 cm = 33 × 10 = 330 mm

By the end of July, the height of the tree was 0.57 meters. We would convert meters to millimeters.

1 m = 1000 mm

0.57 m = 0.57 × 1000 = 570 mm

Therefore, the height in mm that the cherry tree grew between April and July is

570 - 330 = 240 mm

but which class are u may know that first