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Mathematics

2 answers:

olasank [31]3 years ago

8 0

Answer:

640

Step-by-step explanation:

20*5=100

4*12=48

6*5=30

4*4=16

12*6=72

20*6=120

cause these are rectangles you only need 3 side

but also don't forget that little section that they are connected

100+100+48+48+36+36+16+16+72+72+120+120=784

calculate the connected area

72+72=144

s0...

784-144=640

lana [24]3 years ago

4 0

Answer:

I think the answer is a 148 cm squared

Step-by-step explanation:

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Step-by-step explanation:

(c)

$In\: \triangle PLM \: \&\: \triangle PLM\\\angle PLM \cong\triangle PFG.. (corresponding \:\angle s) \\\angle LPM \cong \angle FPG.. (common \: \angle s) \\\therefore \triangle PLM\sim\triangle PFG.. (by\: AA\:Postulate) \\PF = PL + LF = 2 + 3 = 5$

By area of similar triangle theorem:

$\frac {A(\triangle PLM)}{A(\triangle PFG)}= \frac{PL^2}{PF^2}\\\therefore \frac {A(\triangle PLM)}{A(\triangle PFG)}= \frac{2^2}{5^2}\\\therefore \frac {A(\triangle PLM)}{A(\triangle PFG)}= \frac{4}{25}\\A(\triangle PLM)\: :\: A(\triangle PFG) = 4 \: :\: 25$