Question

It is estimated that a brachiosaurus weighed around 124, 000 pounds. A tyrannosaurus Rex weighed about 8.16*10^3 kilograms. Of a Tyrannosaur eats an entire Brachiosaurus, about how much will the Tyrannosaur weigh? Use scientific notation and give your answer in grams.

Answer 1

6.44×10⁷ g

Explanation:

The scenario seems unlikely, as a brachiosaurus weighs about 6.9 times as much as a tyrannosaur. The sum of the two weights is ...

8.16×10³ kg + 1.24×10⁵ lb

= 8.16×10³ kg + (1.24×10⁵ lb)/(2.2046 lb/kg)

= 8.16×10³ kg + 5.62×10⁴ kg

= 6.44×10⁴ kg . . . . . rounded to 3 significant figures

= 6.44×10⁷ g . . . . . . weight of not-so-hungry tyrannosaur

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1 kg = 10³ g