Answer:
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Step-by-step explanation:
1.81 kilograms
what do you need help with
4. < ACB = 90° and < CBA = 52°
5. <SPQ+ <SRQ = 180°
so, <SPQ= < QRT = 100°
7.2^3 or 7.2 cubed=373.248
use Pythagoras theorem
20 units
