2 years ago

The scale is 2cm = 25m. Find the length each measurement ould be on a scale drawing:

1 answer:

5 0

1) 12 cm
2) 38
3) 20
4) 40

Each cm is equivalent to 12.5m. So what you can do I just divide all of them by 12.5 to get the answers above.

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John drives to the beach which is 270 miles away. In 2 hours he drives 10 miles. If he continues at the speed, how long will it

Digiron [165]

1 hr = 5 miles
270 ÷ 5 = 54 hrs

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2 years ago

The area of a cross section through the center of a sphere is 46 square inches. Find the surface area of the sphere.

gavmur [86]

Answer:

184 in.^2

Step-by-step explanation:

The cross section through the center of a sphere is a circle whose radius is equal to the radius of the sphere.

area of circle

$A_{circle} = \pi r^2$

$\pi r^2 = 46$

$r^2 = \dfrac{46}{\pi}$

$r = \sqrt{\dfrac{46}{\pi}}$

$r = 3.83 ~in.$

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$SA = 4 \pi r^2$

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2 years ago

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maria [59]

Answer: it may be 85 but i didnt get anything else

8 0

2 years ago

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earnstyle [38]

-23, hope this helps

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2 years ago

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Determine whether the triangles are congruent. Explain your reasoning .

Nookie1986 [14]

Answer:

Step-by-step explanation:

First use the fact that the sum of interior angles of a triangle is 180° to find the measure of the missing angle

in ΔDEF we have 180 -68 -81 = 31°

in ΔABC we have 180 -68 -33 = 79°

the measure of the angles in ΔABC and ΔDEF are different 33°, 68°, 79° ≠81°, 68°, 31°so the two triangles are not congruent.

6 0

2 years ago