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3 years ago

Find the area of the semicircle.

Mathematics

1 answer:

weqwewe [10]3 years ago

3 0

Step-by-step explanation:

Given

diameter (d) = 6

radius(r) = d/2 = 6/2 = 3

Now

Area of semi circle

$\frac{\pi {r}^{2} }{2}$

$= \frac{3.14 \times {3}^{2} }{2}$

$= 14.13 \: square \: units$

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3 years ago

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Question 28 of 30Calculate the surface area in square feet of a box that measures 13 inches inlength, 11 inches in width, and 11

KATRIN_1 [288]

ANSWER:

5.65 ft²

STEP-BY-STEP EXPLANATION:

We have the following measures:

Length (l) = 13 inches

Width (w) = 11 inches

Height (h) = 11 inches

We can determine the surface area as follows:

$\begin{gathered} A=2\cdot l\cdot w+2\cdot l\cdot h+2\cdot w\cdot h \\ \\ \text{ We replacing:} \\ \\ A=2(13)(11)+2(13)(11)+2(11)(11) \\ \\ A=286+286+242 \\ \\ A=814\text{ in}^2 \\ \\ \text{ Convert inches to feet, knowing that 1 foot is equal to 12 inches} \\ \\ A=814\text{ in}^2\cdot\frac{(1\text{ ft\rparen}^2}{(12\text{ in\rparen}^2} \\ \\ A=5.65\text{ ft}^2 \end{gathered}$

Therefore, the correct answer is 5.65 ft²

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1 year ago

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3 years ago

What produces a graph in a straight line

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