I need help fast please

The sixth grade art students are making a mosaic using tiles in the shape of right triangles. each tile has leg measures of 3 centimeters and 5 centimeters. i f there are 200 tiles in the mosaic what is the area of the mosaic.

Average acceleration: i have no idea how to do this.

Solve each quadratic equation by factoring and using the zero product property. x^2 - 8x + 30 = 3x