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55 sats \ 7 replies \ @cryotosensei OP 8 Nov \ parent \ on: Are you smarter than a 12-year-old? science

Does my working make sense?

AC + BD = 20cm

Assign point between A and C to be X

AX + CX + BD = 20cm
Since the difference between the perimeter of shaded part and unshaded part is 12cm,
AX = 6cm
CX = 4cm

Area of shaded part = 1/2 x 4 x 10 =20 cm2

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48 sats \ 3 replies \ @ThatWhichisNotSeen 8 Nov

Mmm i misunderstood...was thinking the difference as in 40 - 12 = 28 for non-shaded perimeter, 12 for shaded. So then 2*10 = 20 / 2 = 10 cm2.

That is some hard math for a 12 year old! Although it's been a long, long time for me. I always enjoyed math, wish i had stuck with it more...

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65 sats \ 2 replies \ @cryotosensei OP 8 Nov

Same here.
Now I have to relearn my Maths so that I can marshal my children through the education system.

This question is actually easy peasy because I can solve it. Thank you for the interest. Gives me the motivation to find those questions that have left me stumped. (I don’t even understand how to solve them after reading the worked solutions 🥲)

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0 sats \ 0 replies \ @noknees 8 Nov

😂

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0 sats \ 0 replies \ @ThatWhichisNotSeen 8 Nov

my daughter is in kindergarten so i have seems a few more years before i get humiliated by her math abilities. I still appear as this all knowing wonder to her hahah

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24 sats \ 2 replies \ @noknees 8 Nov
Since the difference between the perimeter of shaded part and unshaded part is 12cm,
AX = 6cm
CX = 4cm

a big step jump...

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0 sats \ 1 reply \ @cryotosensei OP 8 Nov

Guilt as charged!

My working needed to be more elegant.

I ought to have done this ☝🏻

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0 sats \ 0 replies \ @noknees 8 Nov

yes that's more specific

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