8. Final Answer: 4,200 sq meters
80 × 60 = 4,800
15 × 10 = 150 (but since there are 4 of them)
150 × 4 = 600
4,800 - 600 = 4,200
9. Final Answer: 27 sq centimeter
I can't quite make it simpler on how I calculated it because its too long but this is the correct answer.
10. Final Answer: 726 sq meter
75 × 40 = 3,000
75 + 3 + 3 = 81 (since there are 2 sides)
40 + 3 + 3 = 46
81 × 46 = 3,726
3,726 - 3,000 = 726
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Verified answer
8. Final Answer: 4,200 sq meters
80 × 60 = 4,800
15 × 10 = 150 (but since there are 4 of them)
150 × 4 = 600
4,800 - 600 = 4,200
9. Final Answer: 27 sq centimeter
I can't quite make it simpler on how I calculated it because its too long but this is the correct answer.
10. Final Answer: 726 sq meter
75 × 40 = 3,000
75 + 3 + 3 = 81 (since there are 2 sides)
40 + 3 + 3 = 46
81 × 46 = 3,726
3,726 - 3,000 = 726