How to Find Area

Lilly wants to find the area of this piece of glass using gray square tiles. Each tile has the area of 1 square unit. Which models show a way that Lily could find the area of the piece of glass?

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What is the area of this shape?

• 36

• 36 square units

• 32

• 32 square units

Which is a way to find area?

• Counting the square units inside a shape

• Counting the square units around the outside of a shape

Vince says the area of this shape is 4 square units. Is Vince correct? Choose the best explanation!

• Yes, Vince is correct because I count four gray rectangles, so the area is four square units

• Yes, Vince is correct because he used four squares to fill in his shape, so the area is four square units.

• No, Vince is wrong because he used more than four square units to fill his shape.

• No, Vince is wrong because he used rectangles and not squares to fill his shape.

When can we use area in real life?

• We can use area to find out how much fabric we need to make a blanket to fit on our bed.

• We can use area to find how much boarder we need to go around the outside of a bulletin board.

• We can use area to find out how much paint we need to cover a wall.

• We can use area to find out how much string we need to cut to make a bracelet for our wrist.

An artist paints a rectangular board using gray paint. Each square is 1 square foot. What is the area of the rectangle that the artist has painted gray?

• 16

• 20

• 4

• 5

Find the area.

• 17 cm²

• 40 cm²

• 26 cm²

• 60 cm²

What is the area of this figure?

• 16 sq.ft.

• 32 sq. ft.

• 48 sq. ft.

• 64 sq. ft.

A wall with the length and width shown in the figure was used to practice tennis. How do I find the area?

• 9+10

• 9x10

• 9+9+10+10

• 9x9+10+10

How can the area of the shaded region be represented and found?

• 4 + 4 and some more

• 4 x 4 and some more

• 4 x 6

• 4 x 7