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Barret07
20.01.2021 •
Mathematics
The edges of a cube are 5 centimeters each and the diagonal of a face is approximately 7 centimeters. What is the approximate area of the cross
section passing through the diagonals of opposite faces of this cube?
OA
12 square centimeters
О В.
25 square centimeters
С с.
35 square centimeters
CD. 49 square centimeters
Solved
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Ответ:
C. 35sqcm
Step-by-step explanation:
area of rectangle = length × breadth
5×7=35
Ответ:
Diameter = 2 m
Radius = 1 m
Area = 3.14 m²
Circumference = 6.28 m
Step-by-step explanation:
✔️Area of the circular rug is already given as 3.14 m²
✔️find radius (r):
Area = πr²
Thus,
Take π as 3.14
3.14*r² = 3.14
Divide both sides by 3.14
r² = 3.14/3.14
r² = 1
find the square root of both sides
r = √1
radius (r) = 1 m
✔️Diameter = 2*r = 2*1 = 2 m
✔️ Circumference = 2πr
r = 1 m
π = 3.14
Thus,
Circumference = 2*3.14*1 = 6.28 m