Does anyone know how to solve this problem? Please let me know. I need an a answer as soon as possible. Thank you :).

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm

Which number line correctly shows 0.8 + 0.3?