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Dima020 [189]
2 years ago
15

Help find area pls :(

Mathematics
1 answer:
Naddik [55]2 years ago
4 0

Answer:

Total area = 26.13 ft²

Step-by-step explanation:

area of a triangle = 1/2 x base x height

From inspection, the base of the triangle = 3 x 2 = 6

and the height of the triangle = 4

⇒ area = 1/2 x 6 x 4 = 12 ft²

area of a semicircle = \frac{1}{2}\pi r^2

⇒ area = \frac{1}{2} \times 3.14 \times 3^2

⇒ area = 14.13 ft²

Total area = 12 + 14.13 = 26.13 ft²

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What is the value of k?
seraphim [82]

Answer:

k=2

Step-by-step explanation:

We have got a right triangle LNO with sides = m,4 and 8

By Pythagorean theorem

m^2=4^2 +8^2

Or m^2 = 80  ... i

IN triangle NOM, 4^2 +k^2 = l^2

i.e. 16+k^2 = l^2... i

In triangle LNM, m^2+l^2 = (8+k)^2

Substitute for m^2 as 80,

i.e. 80+l^2 = 64+k^2 +16k  ... iii

From i, l^2 = 16+k^2

Substitute in iii

80+16+k^2 = 64+k^2 +16k

16k = 32 or k =2


8 0
3 years ago
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D (I think)

Step-by-step explanation:

I used a right triangle calculator and that was the answer

Below is the process the calculator did, hope it helps.

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6 0
3 years ago
Which choices are correct when determining the distance between −56 and −31?
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6 0
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Step-by-step explanation:

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Dorji thought of a number. He first multiplied the number by 3 and then subtracted 12
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