CHAPTER Surface Area - School District #35
CHAPTER Surface Area - School District #35
CHAPTER Surface Area - School District #35
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Name: _____________________________________________________<br />
Date: ______________<br />
1. Jason was asked to find the surface area of a cylinder.<br />
He found the area of the circle and the circumference of the circle.<br />
Why does he need to know the circumference of the circle<br />
2. Draw a net for this cylinder.<br />
3. Estimate the surface area of the cylinder.<br />
Then, calculate the surface area to the nearest tenth of a square<br />
centimetre (1 decimal place).<br />
d = 7 cm<br />
30 cm<br />
Estimate area of circle:<br />
A = π × r 2<br />
← Formula →<br />
2<br />
≈ 3 ×<br />
← Substitute →<br />
≈ cm 2 ← Solve →<br />
Estimate area of 2 circles:<br />
2 × =<br />
Calculate area of circle:<br />
<strong>Area</strong> = π × r 2<br />
=<br />
Calculate area of 2 circles:<br />
Estimate area of rectangle:<br />
A = l×<br />
w<br />
A = ( π × d)<br />
× w<br />
≈ 3 × ×<br />
≈<br />
Estimate surface area:<br />
A ≈ +<br />
≈<br />
262 MHR ● Chapter 5: <strong>Surface</strong> <strong>Area</strong><br />
← Formula →<br />
← Substitute →<br />
← Solve →<br />
Calculate area of rectangle:<br />
Calculate surface area:<br />
A = +<br />
=