Area of Shapes Review Grade 6

This is an adjective that means a thing is made from many smaller things

• composite

• compost

• compose

• compare

What is the formula for finding the area of a rectangle?

• A = bh

• A = 1/2 bh

• A = 1/2 (a+b) x h

• A = 2(bh)

What is the formula for the area of a triangle?

• A = bh

• A = 1/2 bh

• A = 1/2 (a+b) h

• A = 2(bh)

What is the formula for the area of a trapezoid?

• A = 1/2 (a+b) h

• A= bh

• A = 2 (bh)

• A = 1/2 bh

If area of a rectangle is A = bh, why is the area of a triangle A = 1/2 bh?

• Triangles have a base (b) half as long as a rectangle, so we need to find 1/2 bh

• Triangles have a height (h) half as high as a rectangle, so we need to find 1/2 bh

• If you put two equal triangles together you get a rectangle, so 2(1/2(bh)) equals the area of a rectangle (bh)

What have these composite shapes made?

• A house

• 3 triangles, a square and a rectangle

• 3 triangles and 2 squares

• Three triangles and 2 rectangles

What shapes is the house composed of?

• A house

• 3 triangles, a square and a rectangle

• 3 triangles and 2 squares

• Three triangles and 2 rectangles

What shapes can you decompose this shape into?

(a)  

What is the area of the shape?

• 34ft

• 34ft²

• 56ft

• 56ft²

Which two formulas do you need to find the area of this composite shape?

• A= bh and A= 1/2bh

• A= bh and A= 1/2 (a+b) h

• A = 1/2bh and A = 1/2 (a+b) h