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2 years ago

The radius of a circle is 13 centimeters. What is the circle's circumference? Use 3.14 for .

Mathematics

1 answer:

vlabodo [156]2 years ago

8 0

Answer:

The circumference is 81.64cm

Step-by-step explanation:

Circumference of a circle=2×3.14×radius

2×3.14×13=81.64

I hope this helps you in any way :)

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Make b the subject of the formula A=1/2bh

r-ruslan [8.4K]

Answer:

$\blue{b = \dfrac{2A}{h}}$

Step-by-step explanation:

$A = \dfrac{1}{2}bh$

Step 1. Switch sides.

$\dfrac{1}{2}bh = A$

Step 2. Since the fraction 1/2 multiplies b, multiply both sides by the reciprocal of 1/2 which is 2.

$2 \times \dfrac{1}{2}bh = 2 \times A$

$bh = 2A$

Step 3. Since h is multiplying b, and you want b alone, divide both sides by h.

$\dfrac{bh}{h} = \dfrac{2A}{h}$

Answer:

$b = \dfrac{2A}{h}$

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2 years ago

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Step-by-step explanation:

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2 years ago

The radius of a circle is 13 centimeters. What is the circle's circumference? Use 3.14 for ​.

The radius of a circle is 13 centimeters. What is the circle's circumference? Use 3.14 for .