19. when written as the product of their prime factors,
p is 24 x 33 x 7,
q is 22 x 3 x 53,
r is 23 x 32 x 72
(i) is p x r a perfect square? how can you tell?
(ii) is 18q a perfect cube? how can you tell?

answer: was that a question or answer?

step-by-step explanation:

just needed some points but try socratic

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step-by-step explanation:

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet