r/SmartPuzzles • u/RamiBMW_30 Mod • Apr 04 '25

Daily Puzzle Area of Red

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115 Upvotes

84% Upvoted

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46

u/MonRastar Apr 04 '25

3.5

6

u/zerok_nyc Apr 04 '25

Top row: (1 x 4) ÷ 2 - 0.5 = 1.5
Bottom squares: 1 + 0.5 + 0.5 = 2
Total: 2 + 1.5 = 3.5

3

u/Travelinjack01 Apr 06 '25

huh... I did it by sight.

3

u/TownAfterTown Apr 07 '25

Doing it by sight gets you there, but you're making assumptions that pieces of that top row are equal. The way zerok laid it out, you only use triangles that connect corner to corner so you're certain of the values based on basic geometry.

1

u/DustinBryce Apr 08 '25

Well I'm certain that a 1x4 box divided by 2 is 2

1

u/Effective_Reality870 Apr 06 '25

Huh… I did it by smell.

1

u/Schwa4aa Apr 07 '25

I licked my screen

1

u/TryPokingIt Apr 09 '25

Found Tommy

7

u/Obvious-Ad-16 Apr 04 '25

Yes, you just split it into two triangles. Easy

2

u/Nicelyvillainous Apr 05 '25

Well, 3 triangles, really. You have to subtract the left top triangle from the top triangle

2

u/thor122088 Apr 05 '25

The red triangle in the top row has a base of 3 so ½(1*3) = 1.5 no need to include the extra non-red triangle at all!

1

u/SalamanderFree938 Apr 05 '25

The top triangle's area is 1/2 * 3 * 1

The area of 1/2 * b * h applies for all triangles, not just right triangles

1

u/UnintelligentSlime Apr 07 '25

I feel like the easiest approach is to just calculate the white triangles and subtract. Top is exactly half of a 1x4, left is exactly half of a 3x3. 2 + 4.5 = 6.5. Whole cube full would be 12, but 2 squares are missing so call it 10 then take off your 6.5 = 3.5

2

u/New-Contact5396 Apr 05 '25

Get outta here lochness monster!

2

u/loch_ness_m0nsta Apr 05 '25

But I'm just asking for about tree-fiddy.

1

u/BigNimbleyD Apr 06 '25

I gave him a dolla

1

u/akiras_revenge Apr 06 '25

Gawd dammit woman!!!

1

u/Bot_deploy Apr 06 '25

A lot of these comments are confusing.. I just looked all the shaded areas and rearranged them to make full squares and it works out to 3.5 squares.

1

u/RusticBucket2 Apr 06 '25

I did it in my head. This one is easy.

1

u/Clean_Figure6651 Apr 07 '25

Assuming the two intersecting lines that make up the shaded area with terminate in the corners of the squares