Ask question

Ask question

All categories

3 years ago

15

Determine (a) the area and (b) the circumference of the circle.

1 answer:

Inga [223]3 years ago

3 0

Step-by-step explanation:

<h2>a).</h2>

To find the area of the circle we must first find the radius using the formula

radius = diameter / 2

From the question

diameter = 21 ft

The radius is

21/2 = 10.5 ft

Area of a circle = πr²

where r is the radius

Area = π(10.5)²

= 110.25π

<h3>= 346.36 cm²</h3>

<h2>b).</h2>

Circumference of a circle = πd

where d is the diameter

Circumference = π(21)

<h3>= 65.97cm</h3>

Hope this helps you

You might be interested in

Which point on the graph below is included in the solution to the following system of equations?

monitta

Answer:

D(-7,-2)

Step-by-step explanation:

A(-4,3) B(5,-1) C(-2,-6) D(-7,-2)

A: 5×(-4) + 6×3 = -2 ≥ -30 ..... No

B: 2/3×5 + 1 =4.33 ≥ -1 ....No

C: -6 ≤ 2/3×-2 +1 ....No

D: 2/3×(-7)+1 = 2.333 ≤ -2

5×(-7) + 6×(-2) = -47 ≤ -30 ......Yes

5 0

2 years ago

1-2 Cos²25°÷(1-2sin²25)<br>

shusha [124]

Answer:

have a good one

Step-by-step explanation:

6 0

2 years ago

Factor completely: 5x2 - 2x

Maksim231197 [3]

X(5x-2) thats how you factor

3 0

2 years ago

Read 2 more answers

A bill for Rs 3235 was drawn on Feb. 3, 1998 at 6 months and discounted on March 3, 1998 at 8 % p.a. Find the value of the bill

Fantom [35]

Answer:

RS 3127.166

RS 107.834

Step-by-step explanation:

6 month bill :

Drawn date = Feb, 3

Discounted date = March 3,

Difference = 1 month

6 month - 1 month = 5 months = 5 * 30 = 150 days

Value of the bill :

P(1 - rate * time)

3235(1 - 0.08 * 150/360)

3235(1 - 0.08 * 0.4166666)

3235(1 - 0.0333333)

3235(0.9666666)

= Rs3127.1666

Value of bill = 3127.166

Bankers gain = 3235 - 3127.166 = 107.834

6 0

3 years ago

Solve the given equation.<br><br> z/12 = 6

Marrrta [24]

Answer:

$\frac{z}{12} = 6 \\ z = 6 \times 12 \\ z = 72$

ʰᵒᵖᵉ ⁱᵗ ʰᵉˡᵖˢ

3 0

3 years ago