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24 sats \ 8 replies \ @BeeRye 14h \ on: Are you smarter than a 12-year-old? science
10 square cms ?
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55 sats \ 7 replies \ @cryotosensei OP 14h
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 \ @BeeRye 14h
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 14h
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 14h
😂
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0 sats \ 0 replies \ @BeeRye 14h
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 14h
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 14h
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 13h
yes that's more specific
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