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4 years ago

Please help it’s due today!

Mathematics

1 answer:

Dvinal [7]4 years ago

3 0

Robert is incorrect: Surface are of A is 30 + 30 + 42 + 42 + 35 + 35 = 214 square centimeters. Surface area of B is 120 + 120 + 168 + 168 + 140 + 140 = 856 square centimeters. B's surface area is 4 times as great as A's.

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Solve for the value of each variable (special right triangles - answer in square roots)

aivan3 [116]

Answer:

45+30+90=165 but it should be 180

if you wrote in 45 on the right then that is incorrect and should be 60. If that is how the task is then it can't be solved.

5 0

3 years ago

What is the area of a semicircle with a diameter of 14

Neporo4naja [7]

Answer:

76.9690 square units (rounded off to four decimal values)

Step-by-step explanation:

The diameter of the semicircle is 14 units

The radius of the semicircle is thus 14 ÷ 2 = 7 units

Area of a semicircle is given by: $\frac{1}{2}$ × π × r²

In our case, the area is = $\frac{1}{2}$ × π × 7² = 76.9690200129 square units

Or 76.9690 square units (rounded off to four decimal values)

8 0

3 years ago

Read 2 more answers

What is the area of this polygon? please help i’ll give brainliest

Soloha48 [4]

9514 1404 393

Answer:

486√3 ft² ≈ 841.8 ft²

Step-by-step explanation:

The area of a regular hexagon with side length s is ...

A = (3√3)/2s²

For the side length of 18 ft, the area is ...

A = (3√3)/2(18 ft)² = 486√3 ft² ≈ 841.8 ft²

6 0

3 years ago

Mrs. Lin is sewing costumes for her grandchildren. She is making three lion costumes, one zebra costume, and two bear costumes.

stepladder [879]

Answer:

$12\frac{1}{8}\ yd$

Step-by-step explanation:

we know that

The total fabric that Mrs. Lin needs is equal to

$3(1\frac{2}{3})+2\frac{5}{8}+2(2\frac{1}{4})$

Convert mixed number to an improper fraction

$1\frac{2}{3}=1+\frac{2}{3}=\frac{5}{3}$

$2\frac{5}{8}=2+\frac{5}{8}=\frac{21}{8}$

$2\frac{1}{4}=2+\frac{1}{4}=\frac{9}{4}$

substitute

$3(\frac{5}{3})+\frac{21}{8}+2(\frac{9}{4})$

$5+\frac{21}{8}+\frac{9}{2}$

$\frac{40+21+36}{8}=\frac{97}{8}\ yd$

Convert to mixed number

$\frac{97}{8}\ yd= \frac{96}{8}+\frac{1}{8}=12\frac{1}{8}\ yd$

4 0

4 years ago

What is 103,2727,495 in expanded form

Rzqust [24]

Do u mean 103,272,485?

4 0

3 years ago