Plz help I tried and got it wrong

Height = 20 cm

Step-by-step explanation:

Given the following data;

Length = 9cm

Breadth = 9cm

Volume of rectangular prism = 1620cm³

To find the height;

The volume of a rectangular prism is given by the formula;

Volume of rectangular prism = length * breadth * height

Substituting into the equation, we have;

1620 = 9 * 9 * height

1620 = 81 * height

Height = 1620/81

Height = 20 cm

I suggest using this. I'm not telling you to use the calculator, but try reading the equation below it to help you understand. Probably not gonna help much but I tried... sorry

https://www.calculator.net/triangle-calculator.html?vc=3x-13&vx=&vy=&va=60&vz=&vb=5x%2B1&angleunits=d&x=83&y=19