The answer is 42 ft 4 in
The perimeter of a rectangle with length l and width w is:
P = 2l + 2w
l = 12 ft 3 in
w = 8 ft 11 in
1 ft = 12 in
l = 12 * 12 in + 3 in = 144 in + 3 in = 147 in
w = 8 * 12 in + 11 in = 96 in + 11 in = 107 in
P = 2 * 147 + 2 * 107 = 294 + 214 = 508 in
P = 508 in = 504 in + 4 in = 42 * 12 in + 4 in = 42 ft 4 in
Answer:
it's a B because it's the best answer for this quistion like they are saying IF I do this Then this should happen
Answer: 306in^3
method: I would split the cross-section (the trapezium at the front) into two shapes. You first have your rectangle with dimensions of 4 and 7, and your triangle with dimensions of height 4 and base 3 (10 - 7 = 3). 4 × 7 = 28in^2, 4 × 3 = 12, 12 ÷ 2 = 6in^2. The total surface area of the cross-section is therefore 6 + 28 = 34in^2. Now, to find the volume, you just multiply that by 9 which is 306in^3, which is your answer. I hope this helps!
The side lengths 10.5 cm, 20.8 cm, and 23.3 cm create a right scalene triangle.
we know that
The area of a trapezoid is given by the formula
Area=h*(b1+b2)/2
where
<span>b1, b2 are the lengths of each base
h is the altitude (height)
</span>Remember that the bases are the two parallel sides of the trapezoid. The altitude (or height) of a trapezoid is the perpendicular<span> distance between the two bases
</span> therefore
[area of trapezoid]=(11+5)*4/2--------> 64/2------> 32 cm²
the answer is 32 cm²
