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3 years ago

Find the perimeter of the figure to the nearest hundredth. (includes picture)

Mathematics

1 answer:

mr_godi [17]3 years ago

4 0

Answer:

20+20+(circumference of a semi circle)

40+(1/2×2πr)

49+36

= 85mm

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Give right answers for good review

Rainbow [258]

Answer:

45 im not sure doe

Step-by-step explanation:

6 0

3 years ago

To find the surface area of the pyramid, in square inches, Vikram wrote (33.2) (34.2) + 4 (one-half (34.2) (28.4)). What error d

madam [21]

Answer:

B. He used the wrong expression to represent the area of the base of the pyramid.

Step-by-step explanation:

Given

See attachment for pyramid

$Area = (33.2)(34.2) + 4 * \frac{1}{2} * 34.4 * 28.4$

Required

Vikram's error

The surface area of a square pyramid is:

$Area = Base\ Area + 4 * Area \triangle$

Where

$Base\ Area = Length * Length$

$Base\ Area = 34.2 * 34.2$

$4 * Area \triangle = 4 * \frac{1}{2} * Base * Height$

$4 * Area \triangle = 4 * \frac{1}{2} * 34.2 * 28.4$

So:

$Area = Base\ Area + 4 * Area \triangle$

$Area = 34.2 * 34.2 + 4 * \frac{1}{2} * 34.2 * 28.4$

By comparing the calculated expression with

$Area = (33.2)(34.2) + 4 * \frac{1}{2} * 34.4 * 28.4$

Option (b) is correct

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3 years ago

What is the volume of a cube whose edges each have a measure of 1.5 cm?

inysia [295]

Using the cube formula for volume I got V=3.38cm^3

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3 years ago

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What is equivalent to 8-8x

MrRissso [65]

8 - 8x is already in its simplest form.

Without knowing the value of x, you cannot find what is equivalent to 8 - 8x, but you can it if is an equation, such as 8 - 8x = 88 (x would be -10).

However, you can still rewrite it as -8x + 8, which is equivalent to 8 - 8x.

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3 years ago

What is 2.7(7.8) Please show work I don't understand this question thank you!

kumpel [21]

multiplication? then...

2.7 * (7.8) = 21.06

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3 years ago

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