Answer:
1) 2670m^2
2) 4718 in^2
3) 4730 ft^2
4) 7900cm^2
5) 11 542mm^2
6) 3740m^2
7) 6374m^2
8) 2824 ft^2
9) 6004mm^2
Explanation:
Area of a rectangular prism = 2wl + 2lh + 2hw
Where,
w = width
l = length
h = height
1) Area of a rectangular prism = 2wl + 2lh + 2hw
h = 10m; l = 31m; w = 25m
Area = 2(25m)(31m) + 2(31m)(10m) + 2(10m)(25m)
= 2(775m^2) + 2(310m^2) + 2(250m^2)
= 1550m^2 + 620m^2 + 500m^2
= 2670m^2
2) Area of a rectangular prism = 2wl + 2lh + 2hw
h = 21 in; l = 35 in; w = 29 in
Area = 2(29in)(35in) + 2(35in)(21in) + 2(21in)(29in)
= 2(1015in^2) + 2(735in^2) + 2(609in^2)
= 2030in^2 + 1470in^2 + 1218in^2
= 4718 in^2
3) Area of a rectangular prism = 2wl + 2lh + 2hw
h = 19 ft; l = 39ft; w = 28ft
Area = 2(28ft)(39ft) + 2(39ft)(19ft) + 2(19ft)(28ft)
= 4730 ft^2
4) Area of a rectangular prism = 2wl + 2lh + 2hw
h = 24,cm; l = 49cm; w = 38cm
Area = 2(38cm)(49cm) + 2(49cm)(24cm) + 2(24cm)(38cm)
= 7900cm^2
5) 11 542mm^2
6) 3740m^2
7) 6374m^2
8) 2824 ft^2
9) 6004mm^2
Note : Kindly follow the same process for the remaining questions, you'd get their correct answers. I can't finish up due to time constraints. However, you may send me a direct message for the remaining answers. Thank you.