math help on area and perimeter?

Question

1: Find the perimeter of a rectangle 2 ft. 3 in. by 9 in.
5 ft 6 in.
6 ft
10 ft. 6 in.
8 ft.


2: Find the area of a parallelogram with base 6 ft., side 5 ft., and altitude 4 ft.
30 sq. ft
24 sq. ft
36 sq. ft
20 sq. ft


3: The perimeter of a polygon is measured in __________ units.
Linear
Square
Cubic
length


4: The area of a polygon is measured in _________ units.
Linear
Square
Cubic
area


5: The top of a table is circular and 42 inches in diameter. Using p = 3.14, find its circumference in inches and its area in square feet.
112 in; 8.44 sq. ft
144 in; 9.62 sq. ft
132 in; 9.62 sq. ft
124 in; 8.44 sq. ft

Answer 1

1)

let 2 feet 3 in = 27 inches

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Perimeter formula

P = 2L + 2W

P = 2(27) + 2(9)

P = 54 + 18

P = 72

The perimeter is 72 inches

Divide 72 by 12

72 / 12 = 6

The answer is 6 feet

- - - - - -

5)

Area for a circle Formula

A = π r²

A = 3.141592654(21)²

A = 3.141592654(442)

A = 1385.44236

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Answer 2

answering three and four first will help with the others.
3. The perimeter is the boarder of a shape or place
(in movies the gard the perimiter of the base)
the perimeter can be mesured with a tape mesure just bending the line (linner)

4. The area of a place is where cops search for suspects, the suspect is not going to be on the boarder so the cops pick a boarder that the suspect should be within and search the area inside that. To find the area it is multiplying the length by the width giving an answer in the forms of #in^2, #mm^2, #ft^2, and others. So the answer is in squared units.

1. Is a perimeter problem so you add the distances, but remember that there are four sides to a rectangle so
2ft 3in
+2ft 3in
+9in
+9in
=4ft 24in=6ft

2. Wow this parallelogram is leaning, so on this one the base is 6ft but because it is leaning the sides are 6ft but it only stands 4ft. (try drawing it both normal and leaning.) You use length and height on this on to get. (rectangles and squares are the only time you use the base and side because in rectangles and squares the side is strait and is equile to the height)
6ft
*8ft
=24ft^2

5. So here area = pr^2 and circumference=pd
p is givin as 3.14
d is the diamater and 42in
r is the radius and is (d/200 21in

so pd=
3.14
*42in
=132in

and pr^2=
3.14
*21 in
*21 in
=1385 in^2

but 1ft^2=(12in)^2 or 1ft^2 =144in^2
so divide by 144 to get 9.62ft^2

remember practice makes peminate

Answer 3

The 1'st one is 6 feet. Now do the rest of them yourself so you'll pass you're next math test.


Doug

Edit: Maurice; Circumference = π*diameter. And there are 144 sq inches in a sq foot. HTH ☺

Answer 4

a million. it is not a sq. then? the section may well be 50 sq. instruments. 2. it is not a sq.... the fringe may well be 6 + 6 + 5 + 5 = 22 3. it extremely is a sq. no longer a rectangle. the fringe may well be 4(7) = 28. 4. something better by 4 is comparable to sixteen, that something is 4 so the section is sixteen sq. instruments. 5. sixteen sq. instruments.

Answer 5

1. 6 feet
2. 24 sq.ft
3.Square
4.132 in,9.62sq ft

Answer 6

On #5, doesnt C=rsquaredxpie?

If diamiter is 42,then radius(the r) is 21.

21x21(rsquared)=441

441xpie(rsquaredxpie)=1384.74