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MaRussiya [10]
3 years ago
9

HELP HELP HELP HELP help help

Mathematics
1 answer:
SVETLANKA909090 [29]3 years ago
7 0

Answer:

r  = 6

Step-by-step explanation:

To get the value of r we will use the pythagoras theorem a shown;

PR² = QR² + PQ²

(4+r)² = 8² + r²

Expand

16+8r+r² = 64 + r²

16 + 8r = 64

8r = 64 - 16

8r = 48

r = 48/8

r = 6

Hence the value of r is 6

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