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3 years ago

PLEASE HURRY WILL GIVE BRAINLIEST!! What is the surface area of this rectangular prism?

Mathematics

2 answers:

lana [24]3 years ago

8 0

Answer:

THE ANSWER IS 504!!! your welcome hope it helps

Step-by-step explanation:

saul85 [17]3 years ago

6 0

Answer:its 198 :)

Step-by-step explanation:

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Help me plz. The sides of a rectangular terrain are given by the expressions (x - 5) y

tatyana61 [14]

Area = (x - 5)(x – 7)

Area = x(x - 7) - 5(x - 7)

Area = x^2 -7x -5x + 35

Area = x^2 -12x + 35

algebraic expression that represents its area: x^2 -12x + 35

x^2 - 12x + 35 = 195

x^2 - 12x + 35 - 195 = 0

x^2 - 12x - 160 = 0

x^2 - 8x - 20x - 160 = 0

x (x + 8) - 20 (x + 8) = 0

(x + 8) (x - 20) = 0

(x + 8) = 0

(x - 20) = 0

x = - 8 (not a solution)

x = 20

hence,

length = x - 5

length = 20 - 5

length = 15 m

width = x - 7

width = 20 - 7

width = 13 m

perimeter = 2(13) + 2(15)

perimeter = 26 + 30

perimeter = 56 m²

4 0

3 years ago

You have a wire that is 38 cm long. You wish to cut it into two pieces. One piece will be bent into the shape of a square. The o

Drupady [299]

Answer:16.71 cm

Step-by-step explanation:

Given

Length of wire L=38 cm

One piece is bent in the form of square and another in the form of circle

let x be the length of circle

therefore length of square side $\frac{38-x}{4}$

A=total area of square and circle

radius of circle $r=\frac{x}{2\pi }$

area of circle $A_c=\pi r^2=\pi \times (\frac{x}{2\pi })^2$

Area of square $A_s=(\frac{38-x}{4})^2$

$A=\pi \times (\frac{x}{2\pi })^2+(\frac{38-x}{4})^2$

To get the minimum value of A we get

$\frac{\mathrm{d} A}{\mathrm{d} x}=\frac{2x}{4\pi }-\frac{2(38-x)}{16}$

$\frac{\mathrm{d} A}{\mathrm{d} x}=0$

$\frac{x}{4\pi }=\frac{38-x}{16}$

$x=\frac{38\pi }{4+\pi }$

Therefore circumference of circle

$x=\frac{38\pi }{4+\pi }=\frac{119.396}{7.142}=16.717 cm$

8 0

3 years ago

Sharing objects one at a time until there are none left

Rom4ik [11]

Do you mean like equal groups

4 0

3 years ago

5 meters = how many centimeters?

r-ruslan [8.4K]

500.hshshsjdhhsshhere

3 0

3 years ago

Read 2 more answers

There are 78 national monuments in a particular country. Fifty-eight of these monuments are located in state A.

BARSIC [14]

Answer:

a. $\frac{58}{78}$

b. 20

c. $\frac{20}{78}$

Step-by-step explanation:

a. 58 of 78 are from state A

b. 78 minus 58 equals 20

c. 20 of 78 are found in states other than state A

5 0

2 years ago