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Given: 1 inch = 2.54 cm, 1ft = 12 in, 1kg = 2.205 lb) convert the following a) 95.0 lb/ft2 to kg/m2 b) 82.7 ft2 to cm2

User Seann
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1 Answer

1 vote

Answer:

a) 463.75kg/m²

b) 76,830.81 cm²

Explanations:

Given the following conversion rate:

• 1 inch = 2.54 cm

,

• 1ft = 12 in

,

• 1kg = 2.205

We are to convert the following parameter;

95.0lb/ft² to kg/m²


(95lb)/(1ft^2)*\frac{1\operatorname{kg}}{2.205lb}*(1ft^2)/((144)in^2)*(1in^2)/((0.0254)^2m^2)

This can be further simplified as:


\begin{gathered} =(95)/(1)*\frac{1\operatorname{kg}}{2.205}*(1)/(144)*(1)/(0.00064516m^2) \\ =\frac{95\operatorname{kg}}{0.2048512032m^2} \\ =463.75\operatorname{kg}m^(-2) \end{gathered}

b) For the conversion:

82.7 ft² to cm²

If 1ft = 12 in

1ft² = 12²in²

1ft² = 144in²

Similarly,

If 1 inch = 2.54 cm

1in² = (2.54)²cm²

1in² = 6.4516cm²

Applying these formulas for the conversion:


\begin{gathered} =82.7\cancel{ft^2}^{}*\frac{144\cancel{in^2}^{}}{1\cancel{ft^2}^{}}*\frac{6.4516\operatorname{cm}}{1\cancel{in^2}^{}} \\ =76,830.81\operatorname{cm}^2 \end{gathered}

Hence the conversion of 82.7 ft² to cm² is 76,830.81 cm²

User Zakria Khan
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