Alia is making new cushion covers for a chair. There are three sizes of cushions on the chair. What is the surface area of the seat bottom cushion?

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?

The tile along the edge of a triangular community pool needs to be replaced? ?