Area of a shaded region | Geometry | 7th grade | Khan Academy

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Here's a fun one: find the area of a shaded region where you first determine the area of a square and then the area of a circle.

Missed the previous lesson?

Grade 7th on Khan Academy: 7th grade takes much of what you learned in 6th grade to an entirely new level. In particular, you'll now learn to do everything with negative numbers (we're talking everything--adding, subtracting, multiplying, dividing, fractions, decimals... everything!). You'll also take your algebraic skills to new heights by tackling two-step equations. 7th grade is also when you start thinking about probability (which is super important for realizing that casinos and lotteries are really just ways of taking money away from people who don't know probability) and dig deeper into the world of data and statistics. Onward! (Content was selected for this grade level based on a typical curriculum in the United States.)

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The Khan Academy is also The Can Academy, as this is a place learning anything is possible

aravindssingapore
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1:23 how come the 9pi isn’t squared or the whole equation in fact?

Marian-ilqo
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I'm in year 5 and I am learning this

dramabaaz
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He's got scary deep voice there. Feels like the evil is tutoring me in math.

meekahgarcia
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Not very helpful, but thank you anyways!

Animatorsrule