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7. Carry out the arithmetic operations
(a) the sum of the measured values 756, 37.2, 0.83, and 2;
(b) the product `0.0032 times 356.3`; and
(c) the product `5.620 times pi`.
7. Carry out the arithmetic operations
(a) the sum of the measured values 756, 37.2, 0.83, and 2;
(b) the product 0.0032 times 356.3; and
(c) the product 5.620 times pi. (a) `796`
(b) `1.1`
(c) `17.66`
(a)
`756 + 37.2 +0.83 +2 = 796.03 ≈ 796`
(b)
`0.0032 times 356.3 = 1.14016`
since 0.0032 has 2 significant figures
`answer ≈ 1.1`
(c)
`5.620 times π = 17.65575`
since 5.620 has 4 significant figures
`answer ≈ 17.66`
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