3 years ago

the formula for the area of a circle is A pi r^2 what is the radius of a circle with an area of 400 pi cm^2

Mathematics

1 answer:

Bogdan [553]3 years ago

4 0

Answer: 20 cm

Step-by-step explanation: Isolate the variable by dividing each side by factors that don't contain a variable.

You might be interested in

What is the lateral surface area of a square pyramid with a side length 11.2 cm and a slant height 20 cm

madam [21]

Notice the picture below

the lateral area, or just the area of the sides, well, the sides are really just 4 triangles, so just get the area of each, and sum them up, that's the lateral area

3 0

3 years ago

Read 2 more answers

What are the signs of the coordinates of a point in each of the four quadrants

guajiro [1.7K]

On the Cartesian plane in two dimensions, the quadrants are <span>I (+,+), II (−,+), III (−,−), and IV (+,−). The numbering, starting in the upper right corner, goes counter-clockwise.</span>

6 0

3 years ago

Select the decimal that is equivalent to 45/54

lina2011 [118]

Answer:

.83

Step-by-step explanation:

if brainiest is earned its greatly Appreciated

6 0

3 years ago

To prepare for a bake-off, Clarissa used 560 grams of flour each day for 3 weeks. How many kilograms did Clarissa use in those 3

Sindrei [870]

Convert G to kg
560/1000=.56 kg a day

If the bake off was 5 days
.56*5= 2.8kg... per week
2.8kg*3= 8.4 kg for 3 weeks

If it was 7 days
.56*7 = 3.92 kg per week
3.92*3= 11.76 kg for 3 weeks

5 0

3 years ago

I am greater than 35 i am less than 45 i have 2 ones

Nookie1986 [14]

What? I don't understand.

8 0

3 years ago

Read 2 more answers