Question

Please help me in these simple equations

Answer 1

1.
`225cm^2`

2.
`544mm^2`

3.
`405mm^2`

4.
`67.50cm^2`

5.
`495mm^2`

6.
`480cm^2`

Explanation:

1. Square

`A=s^2`

s = 15 cm

`A=(15cm)^2\\A=225cm^2`

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2. Rectangle

`A=l*w\\A=(32mm)(17mm)\\A=544mm^2`

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3. Rectangle

`A=l*w\\A=(45mm)(9mm)\\A=405mm^2`

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4. Triangle

`A=(hb)/(2)\\ A=((9cm)(15cm))/(2)\\ A=(135cm^2)/(2)\\ A=67.50cm^2`

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5. Triangle

`A=(hb)/(2)\\ A=((30mm)(33mm))/(2)\\ A=(990mm^2)/(2)\\ A=495mm^2`

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6. Rectangle

`A=l*w\\A=(34cm)(20cm)\\A=480cm^2`