4326 Modern Education (files.catbox.moe) 🐂 Bullshit 💩 posted 251 days ago by johnsonjackson13323 251 days ago by johnsonjackson13323 +4326 / -0 319 comments share 319 comments share save hide report block hide child comments Comments (319) sorted by: top new old worst You're viewing a single comment thread. View all comments, or full comment thread. ▲ 10 ▼ – MaxineWaters4Prez 10 points 251 days ago +11 / -1 Calculate the surface area of the rectangle. (L x W) [600] Calculate the area [A] of the top right and bottom left circles. (A = pi x r^2) [78.5] and [314] Calculate the area of the circles encompassing the rectangle, which appears to be 1/4. [19.63] and [78.5] Add the quarter circle areas [98.13] Subreact the area in #4 from the total surface area in #1. [501.87] The only part I can't get is how to get the rounded edges from the top left and bottom right. Edit: see my response to the first reply. permalink save report block reply ▲ 4 ▼ – Error404LifeNotFound 4 points 251 days ago +5 / -1 top left and bottom right: (Area of the bounding square - area of the circle) divided by 4 permalink parent save report block reply ▲ 1 ▼ – MaxineWaters4Prez 1 point 251 days ago +1 / -0 So top left A=50.24 Circumference is 8, making an encompassing square 64, subtract circle and quarter it, giving 2.44. Repeating same for opposite corner, A=113.04. Square 144, quartered difference is 0.24... 499.19? permalink parent save report block reply ▲ 2 ▼ – Error404LifeNotFound 2 points 251 days ago +2 / -0 bounding square is L x W, or D x D, or 2R x 2R = (2x4) x (2x4) = 64 circle is (Pi x R^2) = 3.141 x (4 x 4) = 50.26 subtract full circle from full square: 64 - 50.26 = 13.74 divide by 4 to get the lone quarter: 13.74 / 4 = 3.43 permalink parent save report block reply ▲ 4 ▼ – visorak 4 points 251 days ago +4 / -0 There appears to be text showing radius? just like for the other two corner cut outs but its too blurry and I can't read them. permalink parent save report block reply ▲ 2 ▼ – Error404LifeNotFound 2 points 251 days ago +2 / -0 I assumed the following (starting top left, clockwise): R4, R10, R6, R5 permalink save report block reply ▲ 2 ▼ – MaxineWaters4Prez 2 points 251 days ago +2 / -0 Looks like 4 and 6 permalink save report block reply ▲ 4 ▼ – deleted 4 points 251 days ago +4 / -0 ▲ 4 ▼ – KekistanPM 4 points 251 days ago +4 / -0 Imagine a perfect 8x8 square that contains a circle with radius 4. Subtract the area of the circle from the area of the square This gives you the area of a weird shape [A]. Note that each corner of the shape could fill the gap created by a rounded corner of the rectangle. Since there are two rounded corners, we divide [A] by two to get the area of the space that the rounded corners are not taking up [B]. Subtract [B] from the surface area of the rectangle permalink parent save report block reply ▲ 1 ▼ – KekistanPM 1 point 251 days ago +1 / -0 Not sure if my edit went through, but the steps should be numbered 1,2,3,4, not 1,2,4,5. permalink parent save report block reply ▲ 3 ▼ – Trumpok 3 points 251 days ago +3 / -0 To get the corners, calculate the area of a square with the radius of the circle, then subtract the area of a quarter-circle from your square which you're left with the area of the corner. Then that is subtracted from the main shape. permalink parent save report block reply
Calculate the surface area of the rectangle. (L x W) [600]
Calculate the area [A] of the top right and bottom left circles. (A = pi x r^2) [78.5] and [314]
Calculate the area of the circles encompassing the rectangle, which appears to be 1/4. [19.63] and [78.5]
Add the quarter circle areas [98.13]
Subreact the area in #4 from the total surface area in #1. [501.87]
The only part I can't get is how to get the rounded edges from the top left and bottom right.
Edit: see my response to the first reply.
top left and bottom right:
(Area of the bounding square - area of the circle) divided by 4
So top left A=50.24
Circumference is 8, making an encompassing square 64, subtract circle and quarter it, giving 2.44.
Repeating same for opposite corner, A=113.04. Square 144, quartered difference is 0.24...
499.19?
bounding square is L x W, or D x D, or 2R x 2R = (2x4) x (2x4) = 64
circle is (Pi x R^2) = 3.141 x (4 x 4) = 50.26
subtract full circle from full square: 64 - 50.26 = 13.74
divide by 4 to get the lone quarter: 13.74 / 4 = 3.43
There appears to be text showing radius? just like for the other two corner cut outs but its too blurry and I can't read them.
I assumed the following (starting top left, clockwise): R4, R10, R6, R5
Looks like 4 and 6
This gives you the area of a weird shape [A]. Note that each corner of the shape could fill the gap created by a rounded corner of the rectangle.
Not sure if my edit went through, but the steps should be numbered 1,2,3,4, not 1,2,4,5.
To get the corners, calculate the area of a square with the radius of the circle, then subtract the area of a quarter-circle from your square which you're left with the area of the corner. Then that is subtracted from the main shape.