All categories

2 years ago

The following three shapes are based only on squares, semicircles, and quarter circles.

Mathematics

1 answer:

grin007 [14]2 years ago

4 0

The perimeter of the shaded part is: 25.1 cm.

The area of the shaded part is: 36.6 cm².

<h3>How to Find the Perimeter and Area of the Shaded Part?</h3>

Area = Area of square - 2(area of square - area of quarter circle) = s² - 2(s² - 1/4πr²).

Parameters given are:

s = 8 cm
r = 8 cm

Plug in the values into the equation

Area = 8² - 2(8² - 1/4π(8²)).

Area = 64 - 2(64 - 50.3)

Area = 36.6 cm²

Perimeter = 2(perimeter of quarter circle) = 2(1/4(2πr)) = 2(1/4(2π8)) = 25.1 cm

Learn more about perimeter and area on:

brainly.com/question/443376

#SPJ1

You might be interested in

Laura shades 60 squares on her hundredths grid And Billy shades 50 squares on his hundredths grid. Write the decimal number that

Andre45 [30]

Answer:

$Laura = 0.60$

$Billy = 0.50$

0.60 > 0.50

Step-by-step explanation:

Given

$Laura = 60\ shades$

$Billy = 50\ shades$

Required

Represent using decimal number and compare

From the question, we understand that there are 100th grids;

So:

$Laura = \frac{60}{100}$

$Laura = 0.60$

$Billy = \frac{50}{100}$

$Billy = 0.50$

Comparing both decimals;

Since 0.60 is greater than 0.50, we have:

0.60 > 0.50

3 0

3 years ago

Calculate the x and y-intercept for the line:<br><br> y=-2x+8

Kryger [21]

<span>x-intercept, y = 0:
-2x + 8 =0
-2x = -8
x= -8/-2 = 4<span>

y-intercept, x =0
y = 8</span></span>

3 0

3 years ago

Can someone find the expression for h in terms of x.

PilotLPTM [1.2K]

The volume of the cylinder is equal to the sum of all spheres
the volume of 1 sphere is V1=4/3×pi×(1/2 x)³
simplified V1=1/6×pi×x²
we conclude that the volume of the cylinder is V2=270V1
V2=45×pi×x³
also the V2 can be calculated from the cylinder
V2= base(circle)×height
V2=(3x)²×pi×h=9x²×h
so we have
9x²×pi×h=45×pi×x³
simplified h=5x

7 0

4 years ago

can somebody help me with these 4 questions I will give brainliest to anybody who answers them correctly

labwork [276]

ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ

7 0

3 years ago

what is the surface area of the right rectangular pyramid I don't know how to work these so if someone could help me out please

lapo4ka [179]

your answer is b hope I am correct

7 0

4 years ago