Has at least one right angle but is not square
2 answers:
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The surface area of a rectangular prism is 2210 cm^2 Then the other dimension is 70.3 cm
<h3><u>Solution:</u></h3>Given that surface area of rectangular prism is 2210 square centimeter
Also given that two of dimensions are 5 cm and 10 cm
To find: other dimension
<em><u>The total surface area of the rectangular prism is gievn as:</u></em>
Where, "l" is the length and "b" is the breadth and "h" is the height
The given values are: l = 5cm and b = 10cm
On substituting the given values in formula we get,
Thus the other dimension is 70.3 cm
Answer:
Step-by-step explanation:
Decay of carbon - 14 is exponential in nature . It decays as follows .
λ is called decay constant .
λ = .693 / T where T is half life .
Half life of carbon-14 is 5700 years
λ = .693 / T
= .693 / 5700
= 12.158 x 10⁻⁵ year⁻¹
N = .71 N₀
Taking ln on both sides
ln .71 = - λ t
ln .71 = - 12.158 x 10⁻⁵ t
-0.3425 = - 12.158 x 10⁻⁵ t
t = .3425 / 12.158 x 10⁻⁵
2817 years .