Question

can anyone please find the answers to this question?

Answer 1

Answer:

Ooooo i seeee

I don't knowwwww‍♀️‍♀️

Step-by-step explanation:

I

DONT

KNOW

HEHEHEHHEHE

Answer 2

Answer:

a) 143.72 m²

b) 103.72 m²

c) 8 hours and 38 minutes

Step-by-step explanation:

l = Length

w = Width

h = Height

Total surface area of a cuboid

$S=2(lw+wh+lh)\\\Rightarrow S=2(8\times 5+5\times 3+8\times 3)\\\Rightarrow S=158\ m^2$

Area of one window

$S_w=2(lw)\\\Rightarrow S_w=2(2\times 1.5)\\\Rightarrow S_w=6\ m^2$

Area of two doors

$S_d=2\times 2(lw)\\\Rightarrow S_w=4(0.9\times 2.3)\\\Rightarrow S_w=8.28\ m^2$

So, total surface area of the room = Total surface area of the cuboid - Area of one window - Area of two doors = 158-6-8.28 = 143.72 m²

While painting the floor, windows and doors are excluded

$S=2(wh+lh)+lw\\\Rightarrow S=2(5\times 3+8\times 3)+8\times 5\\\Rightarrow S=118\ m^2$

So, total surface area to be painted is 118-6-8.28 = 103.72 m²

Time taken

$Time=\frac{103.72}{12}=8.643\ hours$

Time taken by leonardo to paint the room would be 8 hours and 38 minutes