Explain how to get the product of 2 times the square root of 5 and 4 times the square root of 10

Due to financial difficulties the owner of 4 skateboard stores is going to close 2 of his stores. based on the money earned at each store, which two stores should remain open?

Is ofat (-25, 0), (25, 0) co- (0, -15), (0, 15)?

Use corrrct notations to name the sides