The formula for volume of a sphere is
Check out the videos below to help you calculate volume of a sphere.
TOPIC 13 TEST ON VOLUME IS ON TUESDAY, APRIL 11!!!
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Today we learned how to calculate the volume of a sphere, which is like a ball. To find the volume of a sphere, we only need to know the radius. If we are given a diameter instead of a radius, we can divide the diameter by 2 to turn it into a radius. The formula for volume of a sphere is Check out the videos below to help you calculate volume of a sphere. TOPIC 13 TEST ON VOLUME IS ON TUESDAY, APRIL 11!!!
Today we learned how to find the volume of cones, which is very similar to the volume of cylinders. A cone has 1/3 the volume that a cylinder has, so we can use the same formula that we used for volume of a cylinder, but we divide the volume by 3 to turn it into cone volume. The notes from today are below, along with a few problems from your homework. Here are some of the homework problems we worked out together in class! Today we learned how to find the volume of a cylinder. Volume is the space inside of a 3-D figure. A cylinder is like a pop can or Pringles can. To find the volume, we multiply the area of the base by the height of the cylinder. Since the base is a circle, we need the formula for area of a circle, which is Π times the radius squared. If we are given the diameter, then we divide it by 2 to get the radius. Here are some of the homework problems we worked out together in class!
Today we reviewed our prior circle knowledge. You worked on circles in 7th grade, so today's lesson was all review. Important vocabulary from today: radius - distance from center of the circle to the edge diameter - distance all the way across a circle through the center circumference - distance around the edge of a circle, like the perimeter area - all the space inside of a circle Review the notes below to help you complete the Circle Packet from today. This Circle Packet is your homework tonight! Also remember that you have examples completed for you throughout the Circle Packet. In 12-5 we learned how to use the Pythagorean Theorem to find the distance between two points. We do this by drawing right triangles where the unknown line is our slanted hypotenuse.
We took notes in class, which you can see solutions to below. |
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