Question

Please help me for this homework

Answer 1

None

Explanation:

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Answer 2

123.
`A=lw`,
`A=72`

124. B) 20 square feet

125. C)
`(1)/(6)`

126. A) 24 + 12, B) (4*6)+(4*3)

127. 30, 36, 44

Explanation:

123. Area = length*width

Substitute '9' for
`l` and '8' for
`w`.

`A=(9)(8)` or
`A=(9*8)`

`9*8=72`, so
`A=72`.

124. Using the formula
`A=lw`, substitute '5' for
`l` and '4' for
`w`.

`A=(5)(4)` or
`A=(5*4)`

`5*4=20`, so
`A=20`.

125. The hexagon was divided into 6 triangles, so each of the triangles is one out of six, one sixth (
`(1)/(6)`.

126. The lighter rectangle's area is 24 and the darker's is 12 because (4*6) = 24 and (4*3) = 12.

127. For these shapes, I am using the 'subtraction' method (find the area of the shape as if it were a larger rectangle, then subtract the 'blank' spaces).

A(larger rectangle) =
`6*7=42`

A('blank' space) =
`3*4=12`

A(larger rectangle - 'blank' space) =
`42-12=30`

A(larger rectangle) =
`8*7=56`

A('blank' space) =
`5*4=20`

A(larger rectangle - 'blank' space) =
`56-20=36`

A(larger rectangle) =
`8*6=48`

A('blank' space) =
`2*1=2` (there are two of them (both equal), so add them both together) 2 + 2 = 4.

A(larger rectangle - 'blank' space) =
`48-4=44`