Mission 7 Mission for 7: Mission for 7: To successfully find the surface area of a sphere....

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Mission 7 Mission 7 Mission for 7: Mission for 7: To successfully find the surface area of a sphere. Vocabulary Vocabulary : : surface area, sphere Formula Formula : : A = 4 r 2

Transcript of Mission 7 Mission for 7: Mission for 7: To successfully find the surface area of a sphere....

Page 1: Mission 7 Mission for 7: Mission for 7: To successfully find the surface area of a sphere. Vocabulary: Vocabulary: surface area, sphere Formula: Formula:

Mission 7Mission 7

Mission for 7:Mission for 7: To successfully find the surface area of a sphere.

VocabularyVocabulary:: surface area, sphere

FormulaFormula:: A = 4 r2

Page 2: Mission 7 Mission for 7: Mission for 7: To successfully find the surface area of a sphere. Vocabulary: Vocabulary: surface area, sphere Formula: Formula:

Surface area ReviewSurface area Review

Recall that surface area is the measure of the total surface of a 3-dimensional shape. For example, if you were hired to paint golf balls green, you would bepainting the surface of the golf ball. The measure of the area that youpainted is surface area.

Page 3: Mission 7 Mission for 7: Mission for 7: To successfully find the surface area of a sphere. Vocabulary: Vocabulary: surface area, sphere Formula: Formula:

Formula for a SphereFormula for a Sphere

The formula for the surface area of a sphere is

where SA is the surface area and r is the radius of the sphere.

Page 4: Mission 7 Mission for 7: Mission for 7: To successfully find the surface area of a sphere. Vocabulary: Vocabulary: surface area, sphere Formula: Formula:

This is how we do it!This is how we do it!Find the surface area of a beach ball with radius of 50 cm.

The formula for surface area of a sphere (beach ball) is :

SA = 4 r2

= 4 (50)2 Therefore, the surface area is 31415.7 cm2

Page 5: Mission 7 Mission for 7: Mission for 7: To successfully find the surface area of a sphere. Vocabulary: Vocabulary: surface area, sphere Formula: Formula:

Mi Problem es Mi Problem es su Problemsu Problem

What is the radius of a bowling ball with a surface area of 225 cm2?

Page 6: Mission 7 Mission for 7: Mission for 7: To successfully find the surface area of a sphere. Vocabulary: Vocabulary: surface area, sphere Formula: Formula:

Right On!Right On!

Wow. . . Wow. . . And I And I thought I thought I had had all the all the answers!answers!

I guess I guess you’re just you’re just a pro now!a pro now!

Page 7: Mission 7 Mission for 7: Mission for 7: To successfully find the surface area of a sphere. Vocabulary: Vocabulary: surface area, sphere Formula: Formula:

Don’t look Don’t look in the in the newspaper newspaper for the for the answer. answer. Just click Just click on on Muddler.Muddler.

Page 8: Mission 7 Mission for 7: Mission for 7: To successfully find the surface area of a sphere. Vocabulary: Vocabulary: surface area, sphere Formula: Formula:

Here is your Answer...Here is your Answer...

SA = 4 r 2

225 = 4 r 2

17.9 = r 2

4.23 = r

Page 9: Mission 7 Mission for 7: Mission for 7: To successfully find the surface area of a sphere. Vocabulary: Vocabulary: surface area, sphere Formula: Formula:

Looks like we made it!

Page 10: Mission 7 Mission for 7: Mission for 7: To successfully find the surface area of a sphere. Vocabulary: Vocabulary: surface area, sphere Formula: Formula:

Click on Box Click on Box Muddler if you Muddler if you love Geometry!love Geometry!

Page 11: Mission 7 Mission for 7: Mission for 7: To successfully find the surface area of a sphere. Vocabulary: Vocabulary: surface area, sphere Formula: Formula:

Exit!Exit!

I hope you’ve I hope you’ve enjoyed enjoyed the show. the show.