Mathematics, 31.03.2020 01:00 ebi21

What is the total combined area

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Answer from: 1119diamondlord

Total area is all area of a 2D shape or 3D shape combined.

You need to write out a formula for each shape.

Shape 1 ) A = L x H for any 4 sided 2D shapes

Shape 2) For irregular 4 sided 2D shapes you need to draw a line to create 2 triangles

L x L x L + L x L x L = A

Shape 3) For Trapezoid

Surface area can be given with this formula: Surface Area of Trapezoidal Prism = (b1+b2)h + PH. In this formula, b1 and b2 stand for the length of the bases of the trapezoid. Lower case h is the height of the trapezoid. Upper case P is the perimeter of the trapezoid, and upper case H is the height of the prism

Shape 4 cuboid or prism

You take the surface area x (above)

so that;

A + A of each face = Total combined Area.

Except for Rectangular prism where we first find the longer L x H = A

Then; A + A of each face if 3 different sizes faces would be A x 2 A x 2 A x 2. if 2 different sizes would be A x 2 A x 4 so that prism with 6 sides would equal 6

Some prism have 5 sides like a triangular prism

A x 2 A x 3

We would do the rectangles first to remind us the process of Volume for other questions.

For circles we use A = π × r2

For cylinders we use A of the circle (just mentioned) so that A+ A are the circular areas then work out the area of the Side and add them using the formula 2πr2 + 2πrh.

Formula for sphere =A=4πr2

Step-by-step explanation:

Answer from: Quest

11 mintues is the naswer

Answer from: Quest

d. $180

step-by-step explanation:

if the dimensions of the room is 9ft by 12 ft, we have the area of the floor as,

$a=9\times 12=108\text {ft^2}$

so the area of the floor is 108 square feet, converting that into square yards we get,

$108 \times 0.1111= 12 \text{yd^2}$

the cost of carpet is $15 per square yard, therefore the cost of carpet for 12 square yards is,

$\$15 \times 12=\$180$

hence, the cost of carpet is $180.

assuming the dimensions of the room be,

15 ft by 12 ft

so, the area of the floor of that room is,

$a = 12 \times 15=180\text {ft}^2$

we can convert 180 square feet into square yards, we know that,

1 sq ft = 0.111 sq yard

so, 180 square feet is,

$180 \times 0.111=20 \text {yd}^2$

so the area of floor is 20 square yards.

now, the cost of carpet is 15 dollars per square yard, therefore the cost of carpet for 20 square yards is,

$\$15 \times 20= \$300$

so, it will cost $300.

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