Yana 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 back cushion?
26 in
14 in
5 in
5 in
Net for Seat Back
26 in
26 in
5 in
seat back
18 in
14 in arm rest
18 in
18 in
seat bottom
5 in
5 in
26 in
21 in
26 in