7 less than a number is 20
2 answers:
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This is a right triangle (you can confirm by using Pythagorean Theorem: 15² + 36² = 39²)
A =
A =
= 15 * 18
= 270
Answer: 270 cm²
This is a right triangle (you can confirm by using Pythagorean Theorem: 15² + 36² = 39²)
A =
A =
= 15 * 18
= 270
Answer: 270 cm²