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3 years ago

Calculate the area of a circle with diameter of 6cm

1 answer:

3 0

Area of circle = pi times radius sqauared
Radius is from center of circle to edge
Diameter is from one side of circle to the other throygh center
Therefore radius is half the diameter
a = pi * 3^2 = 28.3cm^2 (3sf)

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PLS HELP ME GRADUATE ILL MARK BRAINLY A-AND ILL GIVE U A COOKIE!!! PLS

snow_lady [41]

Answer:

Dilate circle A by a scale factor of 4.

Step-by-step explanation:

Dilating circle A by 4 would be the same as multiplying its radius of 6 by 4, which would make it 24.

The radius of circle B is 24.

Rotating it wouldn't change anything (it's a circle), and I don't think reflecting and translating show circle similarity

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3 years ago

The length of each side of a square was decreased by 2 inches, so the perimeter is now 52 inches. What was the original length o

telo118 [61]

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3 years ago

A sporting goods manager was selling a ski set for a certain price. The manager offered the markdowns shown on the right, making

ra1l [238]

Answer:

The original selling price would be $ 515.87 ( approx )

Step-by-step explanation:

Consider the complete question is :

"A sporting goods store manager was selling a ski set for a certain price. The manager offered the markdowns shown, making the one-day sale price of the ski set $325. Find the original selling price of the ski set. It was marked down 10% and 30%"

Suppose x be the original selling price ( in dollars ),

After marking down 10%,

New selling price = x - 10% of x = x - 0.1x = 0.9x

Again after marking down 30%,

Final selling price = 0.9x - 30% of 0.9x

= 0.9x - 0.3 × 0.9x

= 0.9x - 0.27x

= 0.63x

According to the question,

0.63x = 325

$\implies x =\frac{325}{0.63}=\$ 515.87$

Therefore, the original selling price would be $ 515.87.

8 0

3 years ago

Read 2 more answers

Find the surface area of a sphere with a volume of 36π in3.

swat32

First use known volume to solve for radius:
$V=\frac{4}{3}\pi r^{3}$
$r=\sqrt[3]{\frac{3V}{4\pi}}$
$r=\sqrt[3]{\frac{3(36\pi)}{4\pi}}$
$r=\sqrt[3]{27}$
$r=3$

Then use the radius to get the surface area:
$A_{surf}=4 \pi r^{2}$
$A_{surf}=4 \pi 3^{2}$
$A_{surf}=4 \pi 9$
$A_{surf}=36\pi\approx113.09$

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3 years ago

if two girls have 280 dollars and one spends 2/3 of it and has 36 dollars left. how much does the other girl have left if she sp

My name is Ann [436]

the main equation you need to do is just 36 x (3/4), you will get that 27 dollars has been spent.

now you just do 36 - 27 to get the final answer

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3 years ago