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Mandarinka [93]
4 years ago
13

A) Jaką długość powinien mieć mieć bok kwadratu , aby pole tego kwadratu było równe polu prostokątu o wymiarach 3cm x 4cm ? Wyni

k podaj z dokładnością do 1mm.
b) Jaką długość ma krawędź sześcianu , którego ma objętość jest równa objętości prostopadłościanu o wymiarach 2cm x 4cm x 5 cm ?Wynik podaj z dokładnością do 1mm.
Mathematics
1 answer:
Dovator [93]4 years ago
5 0

(a)

we are given

length of rectangle is 3cm

L=3cm

width of rectangle is 4cm

W=4cm

now, we can use area formula

A=L\times W

we can plug values

A=4\times 3

A=12 cm^2

Let's assume side of square is 'a'

A=a^2

we can set them equal

and then we can solve for a

a^2=12

a=3.464cm..........Answer

(b)

we are given

length of cuboid is 2cm

so, L=2cm

width of cuboid is 4cm

so, W=4cm

height of cuboid is 5cm

so, H=5cm

now, we can find volume

V=L\times W\times H

now, we can plug values

V=2\times 4\times 5

V=40cm^3

Let's assume edge of cube is 'a'

so, volume is

V=a^3

now, we can set them equal

and then we can solve for a

a^3=40

a=3.420cm...........Answer

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