140a chapter 1 bmission assignment, you submit answers by question parts. The nu

Question

140a chapter 1 bmission assignment, you submit answers by question parts. The number of submissions remaining for each question part only changes if you submit or change the answer. ent Scoring submission is used for your score. For each of the following formulas and associated values, find and express the solution with the appropriate number of significant figures and appropriate units. (a) The area A of a rectangle of length L 2.37 m and width w m 18.75 m. (b) The area A of a circle of radius r 0.037 m. m (c) The volume V of a cylinder with height h 0.0191 m and radius r 0.0001871 m. m (d) The perimeter P of a rectangle of length L 207.9 m and width w 28.08 m. Need Help? Read Answer l save Progress Practice Another Version My Notes Ask Yo points Giocp2 1 P.002 You take a long walk on a sandy beach. When you return home, you dump the sand out of one of your shoes and find that the pile has a volume of 1.4 cm If th

Explanation / Answer

part a:

area of a rectangle =length*width

as L has 3 significant figures, final answer will be having three significant figures

area=2.37*18.75=44.4 m^2

part b:

r has 2 significant figures

so area A will have three significant figures

A=pi*r^2=4.3*10^(-3) m^2

part c:

height=h=0.0191 m

radius r=0.0001871 m

h has 3 significant figures and r has 4 significant figures.

then V will have 3 significant figures

V=pi*r^2*h

=pi*0.0001871*0.0001871*0.0191

=0.00000000210 m^2

part d:

L has 4 significant figures and w has 4 significant figures

hence P will have 4 significant figures

P=2*(w+L)=2*(207.9+28.08)=472.0 m

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