Math for Ms. Sue please!
posted by Delilah
1.
Name the solid with the description as a figure that has one base that is a rectangle and four lateral surfaces that are triangles. (1 point)
triangular pyramid
cone
rectangular prism
rectangular pyramid
2.
A solid with two parallel and congruent bases cannot be which of the following? (1 point)
cone
prism
cylinder
cube
17.
A cone has a radius of 15 cm and a volume of 540 cm3. Find the volume of a similar cone with a radius of 10 cm. (1 point)
54 cm3
240 cm3
160 cm3
360 cm3
18.
Find the surface area of a sphere with a radius of 5 meters. (1 point)
about 250 m2
about 314 m2
about 340 m2
about 523 m2
19.
Find the volume of a sphere with a radius of 5 meters. (1 point)
about 560 m3
about 314 m3
about 340 m3
about 523 m3
My answers:
1. rectangular pyramid
2. cone
17. 240 cm
18. about 314
19. about 523

Ms. Sue
I don't know about 17, but the others are right.

Delilah
I am not sure about 17 either. Do you know how to solve it?

Ms. Sue
I'm not sure. Please post 17 as a separate question, without my name.

Dr. Jane
I think 17 is correct.
If I remember the formula correctly it is
V = 1/3 times r^2 times h
What is given allows us to find h.
Then you can use 10 cm and the h to find the new volume. 
drwls
17. A "similar" cone would have the height and radius reduced by the same fraction (2/3 in this case). The volume would be reduced by a factor (2/3)^3 = 8/27. Multiply that by 540 and you get 160 cm^3.

Delilah
I am confused! Is 17 240 or 160??

Ms. Sue
It's as drwls said  160 cm^3

Anonymous
Rectangular prism

Andy Grammer
are the answers right

Andy Grammer
Question 17 is right number 2 not sure.

Andy Grammer
Love Jiskha

bear
no ones right

Anonymous
Even though I like 999 years late it would be 160 for the answer
Respond to this Question
Similar Questions

Algebra
What is a solid with the description as a figure that has one base that is a rectangle and four lateral surfaces that are triangles. A. triangular pyramid B. cone C. rectangular prism D. rectangular pyramid my answer is D..? 
Algebra
what solid has 2 bases that are triangles and 3 lateral surfaces that are rectangles a triangular pyramid b rectangular prism c triangular prism d rectangular pyramid my answer is C 
algebera
1) Identify the solid form by the given net. :Triangular Prism :Triangular Pyramid*** :Cone :Triangle 2) Name the solid according to it's description: The figure has two bases that are parallel congruent circles. :Cylinder*** :Rectangular … 
math
Which solid has one base that is a rectangle and four lateral surfaces that are triangles? 
Math
1.Which solid has one base that is a triangle and three lateral surfaces that are triangles? 
Math
1. which solid has a base that is a triangle and three lateral surfaces that are triangles? 
Math
Which Solid has one base that is a rectangle and four lateral surfaces that are triangles? 
Algebra
Which solid has one base that is a rectangle and four lateral surfaces that are triangles? 
algebra  HELP
1. which solid has one base that is a rectangle and four lateral surfaces that are triangles? 
math Help!!!!!!
1. which solid has one base that is a rectangle and four lateral surfaces that are triangles?