4 years ago

There are 3 siblings in the Jonesy family.

Mathematics

1 answer:

BabaBlast [244]4 years ago

8 0

Caroline is 40inches
Josiah is 48inches
Peyton is 59inches
You times their height by 20 to get the answers

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Step-by-step explanation:

Divide the tax rate (9.750%) by 100 to get a decimal rate of 0.09750.

Add 1 to the decimal rate to get 1.09750.

Divide that tax-included price ($647.99) by 1.09750 price to get a pretax price of $590.42.

Subtract the pretax price from $647.99 to get the sales tax amount of $57.57.

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Answer:

The volume is 1386 cm³ and curved surface area is 396 cm².

Step-by-step explanation:

Given that,

The diameter of a cylinder is 14 cm

Height of the cylinder is 9 cm

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If r is the radius, r = 14/2 = 7 cm

Volume of a cylinder is given by :

$V=\pi r^2 h\\\\V=\dfrac{22}{7}\times (7)^2 \times 9\\\\V=1386\ \text{cm}^3$

The curved surface area of the cylinder is given by :

$A=2\pi r h\\\\A=2\times \dfrac{22}{7}\times 7\times 9\\\\A=396\ \text{cm}^2$

So, the volume is 1386 cm³ and curved surface area is 396 cm².

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