Can Someone Help Me On These Math Problems???

1. Find the coordinates of the midpoint of the segment that joins points (5,2) and (-3,8).

2. The volumes of two similar pyramids are 27 and 64. If the smaller has lateral area of 18, find the lateral area of the larger.

3. FInd the lateral area of a regular triangular pyramid with base edge 3 in and slant height 6 in.

4. Find the volume of a regular square pyramid with base edge 4 m and height 6 m.

Can you please show me how to find the answers? Thanks

Top 2 Answers

A few days ago

Marley K

Favorite Answer

# 2) is not a direct proportion, because you can’t compare volumes with areas. Therefore, take the 27 and 64 which are volume, that’s cubic. Their cube roots are 3 and 4 respectively. Now, square those for areas, that’s 9 and 16.

So the proportion would be 9/16 = 18/x, and cross multiplying you get x =32. The area of the larger pyramid is 32.

#’s 3 and 4, are very direct, just use the formulas (which must be in your textbook) and plug in numbers.

A few days ago

ℒ∆υ®єи (HPϟ)

I am taking honors geometry so this is reliable.

1. The midpoint formula is simple. You are just finding the average between the two points. So basically, the two X’s added together divided by two and the two Y’s added together divided by two. That is the coordinate of the midpoint.

2. 18/27= X/64

Solve that.

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Can Someone Help Me On These Math Problems???

Can Someone Help Me On These Math Problems???

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