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3 years ago

Help meeee I will give brainliest

Mathematics

2 answers:

Iteru [2.4K]3 years ago

4 0

4.8, I hope this helps you, I answered this earlier. :)

andrey2020 [161]3 years ago

4 0

12 x 12 = 144 ...area of square
12 x 8 / 2 = 48 ...area of triangle

144 + 48 = 192 ft^2

answer 192 ft^2

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What is the approximate perimeter of a rhombus with the diagonals that measure 12 feet and 18 feet

Fynjy0 [20]

Answer:

The perimeter of a rhombus with diagonals of 12 feet and 18 feet would be 60 feet.

Step-by-step explanation:

Perimeter of a rhombus: S1 + S2 + S3 + S4 = answer. (S stands for side.)

12 ft. + 18 ft. + 12 ft. + 18 ft. = 60 ft.

7 0

3 years ago

The diagram below represents the net of a triangular prism. What is the surface area of the triangular prism?

AleksandrR [38]

Answer:

(C)

Step-by-step explanation:

The diagram is divided ninto 5 parts that is rectangles ABCD, CHGD, GFEH and triangles CIH and DGJ.

Area of rectangle ABCD= $l{\times}b$

= $12{\times}6=72cm^{2}$

Area rectangle CDHG= $l{\times}b$

= $12{\times}8=96cm^{2}$

Area rectangle HGFE= $l{\times}b$

= $10{\times}12=120cm^{2}$

Area of triangles CIH and DIG= $2{\times}\frac{1}{2}{\times}b{\times}h$

= $6{\times}8=48cm^{2}$

Surface area of the triangular prism=Area of rectangle ABCD+Area rectangle CDHG+Area rectangle HGFE+Area of triangles CIH and DIG

= $72+96+120+48=336cm^{2}$

Hence, option C is correct.

3 0

3 years ago

In the Central City Grand Prix, out of 30 cars that started the race, 12 of them finished. what percent of the cars finished the

sveta [45]

Answer:40%

Step-by-step explanation: 12/30=.4

6 0

4 years ago

Please help me answer this. I think that for the first one the answer is A, but I am not sure. There are two parts to the questi

Anika [276]

Vector $PQ=(7-5, 3-4)=(2, -1)$ . $4RS=4 \cdot (4-8, 1-6) = 4 \cdot (-4, -5) = (-16, -20)$ . So the sum is $(-14, -21)$ .

For the second, the magnitude is the square root of the sum of the squares of the components. This is equal to $\sqrt{(-14)^2+(-21)^2} = \sqrt{637}=7\sqrt{13}$ .

4 0

3 years ago

Read 2 more answers

If the legs of an isosceles right triangle have a length of ft, the hypotenuse will have a length of?

lesya [120]

Isoceleese means then that 2 sides are equal
right triangle so the legs are equal

a^2+b^2=c^2
the legs aer a and b
in isocoleese, a=b
a^2+a^2=c^2
2a^2=c^2
if isocoleese=a then c=?
solve for c
sqrt both sides
a√2=c

if the legs are x feet, then the hyppotonuse is x√2 feet

6 0

3 years ago