198 sq. yd. 8 sq. ft. x 7 =

Step-by-stepa. 10 yd.*3 yd.=30 square yards;

b. 15 ft.*18 ft.=279 square feets;

c. 13 yd.=13*3 ft.=39 ft.=39*12 in.=468 in., 2 ft. 6 in.=2*12+6 in.=30 in., then 13 yd. 2 ft. 6 in.*15=498 in. * 15=7470 in.;

d. 198 sq. yd.=198 * 9 sq. ft.=1782 sq. ft.

198 sq. yd. 8 sq. ft. = 1782+8 sq. ft.=1790 sq. ft.

Then 1790 sq. ft. * 7=12530 sq. ft.