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154 = 22/7 . r (kuadrat)
(akar) 49 = r (kuadrat)
r = 7 cm
s = (akar) 24 (kuadrat) + 7(kuadrat)
= (akar) 576 + 49
= (akar) 625
= 25 cm
Luas selimut krct = pi. r. s
= 22/7. 7. 25
= 550 cm2
154 = 22/7 . r²
154 . 7/22 = r²
49 = r²
√49 = r
maka r = 7 cm
l.selimut = π . r . s
= 22/7 . 7 . 25
= 22 . 25
= 550