All categories

3 years ago

The area of a circle is 42.29m2. Find the length of the diameter rounded to 1 DP.

Mathematics

1 answer:

Firdavs [7]3 years ago

6 0

Step-by-step explanation:

area of a circle=πr²

=42.29m²

42.29m²=πr²

then find for r, multiply it by two to obtain the diameter of the circle

You might be interested in

50 Points - Use the function f(x) to answer the questions:

faust18 [17]

f(x) = 2x^2 - x - 10

Part A:

x-intercepts: (-2,0), (5/2,0)

Part B:

The vertex is the minimum

vertex: (1/4, -81/8)

Part C:

x: -2, -1, 1/4, 1, 2

y: 0, -7, -81/8, -9, -4

3 0

3 years ago

What is <br> f(-1)=-3x^{2}+7x+4

tino4ka555 [31]

Step-by-step explanation:

please mark me as brainlest

5 0

2 years ago

Read 2 more answers

What is the answer?<br> 2500/x+20<br> =2500/(48.59)+20

sammy [17]

The answer would be 71.45

7 0

3 years ago

What percent is 39 ft of 110 ft

Levart [38]

Answer:

Step-by-step explanation:

7 0

3 years ago

Which equation is y = 2x2 – 8x + 9 rewritten in vertex form?

pishuonlain [190]

we have

$y=2x^{2} -8x+9$

Group terms that contain the same variable, and move the constant to the opposite side of the equation

$y-9=2x^{2} -8x$

Factor the leading coefficient

$y-9=2(x^{2} -4x)$

Complete the square. Remember to balance the equation by adding the same constants to each side

$y-9+8=2(x^{2} -4x+4)$

$y-1=2(x^{2} -4x+4)$

Rewrite as perfect squares

$y-1=2(x-2)^{2}$

$y=2(x-2)^{2} +1$ -----> equation in vertex form

therefore

the answer is the option C

$y=2(x-2)^{2} +1$

3 0

3 years ago

Read 2 more answers