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mel-nik [20]
3 years ago
14

Find the area of a regular pentagon with a side of 10cm and an apothem of 6.9cm

Mathematics
1 answer:
svetlana [45]3 years ago
7 0
Area = 172.05 i think
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PLEASE HELP FAST!!!!
maks197457 [2]

Answer:

Step-by-step explanation:

use desmos.com

6 0
2 years ago
Question 5 (12 points)
Dima020 [189]

Answer:

see attached for diagram

a) √13

b) √29

c) 4

Step-by-step explanation:

Equation of the circle:  (x + 1)^2 + (y - 3)^2 = 16

⇒ center = (-1, 3)

⇒ radius = √16 = 4

Distance between 2 points formula:

\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

a)  let (-1, 3) = (x_1,y_1)

    let (2, 1) = (x_2, y_2)

 \implies \sqrt{(2+1)^2+(1-3)^2} =\sqrt{13}

b)  let (-1, 3) = (x_1,y_1)

    let (4, 1) = (x_2, y_2)

\implies \sqrt{(4+1)^2+(1-3)^2} =\sqrt{29}

c)  let (-1, 3) = (x_1,y_1)

    let (3, 3) = (x_2, y_2)

\implies \sqrt{(3+1)^2+(3-3)^2} =4

4 0
2 years ago
Read 2 more answers
= 272 and
BlackZzzverrR [31]
D) attached is a picture, I would’ve typed it out but I can’t use the square root symbol

5 0
3 years ago
What is the volume of a sphere with a radius of 3 inches?
Vilka [71]

Answer:

36π cubic inches

Step-by-step explanation:

V = 4/3 πr³

radius (r): 3

= 4/3π(3)³

= 4/3π (27)

= 36π

3 0
2 years ago
Multiply. (7x-4)(4x-3)
dlinn [17]

<u>Your answer is 28x^2-37x+12</u>

<u>1) Use the FOIL method: (a+b)(c+d)=ac+ad+bc+bd</u>

28x^2-21x-16x+12

<u>2) Collect like terms</u>

28x^2+(-21-16x)+12

<u>3) Simplify</u>

28x^2-37x+12


7 0
2 years ago
Read 2 more answers
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