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Answer:
A = 99 in²
Explanation:
Using the given formula with d₁ = 18 and d₂ = 11 , then
A = × 18 × 11 = 9 × 11 = 99 in²
Answer: 36 and 22 A=396
half of 1 diagonal is 18, so the whole diagonal is 36
the other diagonal half is 11 so the whole is 22
put 36 and 22 into the boxes
then solve