Which of the following is a prime number? 99, 53, 117, 121
2 answers:
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Answer:
Step-by-step explanation:
Draw a picture. Seriously, this time you need to, so you can see that PS is the hypotenuse of a right triangle with legs of length 3 and 4 .
PS = √(3² + 4²) = 5
Perimeter = PQ + QR + RS + PS = 9 + 4 + 6 + 5 = 24 cm
