Math Problem. Please help?!
Favorites|Homepage
Subscriptions | sitemap
HOME > > Math Problem. Please help?!

Math Problem. Please help?!

[From: ] [author: ] [Date: 12-05-09] [Hit: ]
a.b.c. 1/1.d.2.......
A model of a cylindrical fuel tank has a radius of 5 cm and a height of 12 cm. On the model, 1 centimeter represents 1.25 m.

1. What is the scale factor between the model and the fuel tank?
a. 1/125
b. 1/150
c. 1/1.25
d. 4/5


2. Determine the surface area of the fuel tank in square meters. Round to the nearest tenth of a square meter.
a. 66.76 m^2
b. 1043.2 m^2
c. 834.5 m^2
d. 711.8 m^2

-
1. 100cm is 1m so the answer is a
2. SA= A(top)+A(bottom)+A(side)
= (pi)r^2 + 2(pi)r^2 + 2(pi)rh
=78.5+78.5+377.0
= 534.0 cm^2

remember to convert to m
534x1.25= 667.6m^2
Im assuming you misplaced a decimal so your answer will be a
1
keywords: Problem,help,Math,Please,Math Problem. Please help?!
New
Hot
© 2008-2010 http://www.science-mathematics.com . Program by zplan cms. Theme by wukong .