Questions on Geometry: Area and Surface Area answered by real tutors!

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Question 253225: The area of a trapezoid is found using A = 1/2 (b1 + b2)h where b1 is one base, b2 is the second base, and h is the height. Suppose a trapezoid has a base of 5x, another base of 9x, and a height of 8xy. What is the area?
Click here to see answer by richwmiller(17219)

Question 253270: A trapezoid has dimensions of base 1 = 2 inches, base 2 = 4 inches, and a height of 6 inches. What is the area of the trapezoid?

Click here to see answer by Greenfinch(383)

Question 253320: If the points A(-1,1) and B(1,2) lie on a line m, what is the slope of line m?

Click here to see answer by jim_thompson5910(35256)

Question 253320: If the points A(-1,1) and B(1,2) lie on a line m, what is the slope of line m?

Click here to see answer by palanisamy(496)

Question 253324: Which of the following represents the ratio of the area of the circle to its circumference?
(1) 2:r (3) 1:2r
(2) r2:4 (4) r:2
Click here to see answer by Alan3354(69443)

Question 253324: Which of the following represents the ratio of the area of the circle to its circumference?
(1) 2:r (3) 1:2r
(2) r2:4 (4) r:2
Click here to see answer by richwmiller(17219)

Question 253330: If the measure of each exterior angle of a regular polygon is 20 degrees, how many sides does the polygon have?
(1) 2 (3) 18
(2) 9 (4) 1
Click here to see answer by palanisamy(496)

Question 253476: Help I've forgotton my math!
I have a rectangle 9.75" X 6.5" whose area I need to increase by 11%. How do I figure this increase such that I will end up with the measurements for the sides of the new larger rectangle?

Click here to see answer by Greenfinch(383)

Question 253474: A right circular cone has an altitude of 20 cm and a base of radius 4 cm. Find the lateral surface area and the total surface area.
Click here to see answer by Greenfinch(383)

Question 253473: Find the radius of a cone whose lateral surface area is 2900π m2 and whose slant height is 100 m.
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Question 253470: Find the total area of a cone whose slant height is 6 units and whose diameter is 4 units.
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Question 253471: What is the slant height of a right circular cone whose lateral surface area is 66π units2 and whose radius is 6 units?
Click here to see answer by drk(1908)

Question 253471: What is the slant height of a right circular cone whose lateral surface area is 66π units2 and whose radius is 6 units?
Click here to see answer by Greenfinch(383)

Question 253469: Find the surface area and the lateral area of a cylinder with a height of 5 m and a radius of 0.75 m.
Click here to see answer by drk(1908)

Question 253469: Find the surface area and the lateral area of a cylinder with a height of 5 m and a radius of 0.75 m.
Click here to see answer by Greenfinch(383)

Question 253468: Find the slant height of a regular pyramid whose base is a hexagon with one side measuring 30 units and whose altitude is 10√3 units.
Click here to see answer by Greenfinch(383)

Question 253467: A regular pyramid has a square base. One side of the base has a length of 12 units and the lateral surface area is 240 square units. Find the altitude of the pyramid.
Click here to see answer by Greenfinch(383)

Question 253465: Pyramid A-BCD is a regular pyramid. Use the given information and find the lateral surface area.
Click here to see answer by Greenfinch(383)

Question 253466: The base of a hexagonal pyramid has a perimeter of 45 units and a slant height of 10 units. Find the lateral area.
Click here to see answer by richwmiller(17219)

Question 253464: If a regular square pyramid has a slant height of 7 units and a base with an edge of 6 units, then what is the area of the base?
Click here to see answer by richwmiller(17219)

Question 253464: If a regular square pyramid has a slant height of 7 units and a base with an edge of 6 units, then what is the area of the base?
Click here to see answer by Greenfinch(383)

Question 253463: In a regular pyramid, AR is 8 feet long. Find the area of one face and the total surface area.
Click here to see answer by richwmiller(17219)

Question 253461: Find the lateral surface area of the right prism whose base is a rectangle. Assume that the altitude is 5 units.

Click here to see answer by richwmiller(17219)

Question 253322: What is the area of triangle ABC, if AB = 8 and M(angle)= 30?
Click here to see answer by richwmiller(17219)

Question 253325: A certain set contains three triangles: scalene, isosceles, and equilateral. If a triangle is selected at random, what is the probability that at least one of its medians is also an altitude?
(1) 0 (3) 2/3
(2) 9 (4) 1
Click here to see answer by edjones(8007)

Question 253526: The length of a rectangle is twice its width. If the perimeter of the rectangle is 30IN , find its area.
so far i know, l=2w 2w(w)=30 2w^2=30 w^2=15 i know i need to get rid of the square root

Click here to see answer by blwinbbbles(106)

Question 253730: A box with a lid is to be made from a 48-by-24-inch piece of cardboard by cutting and folding. If the box must be at least 6 inches high, what size squares should be cut from the two corners in order for the box to have a volume of 1000 cubic inches?
THANK YOU IN ADVANCE.
Click here to see answer by richwmiller(17219)

Question 253811: If W=6 inches, L=6 inches, and H=24, what is the volume of the pyramid?
Click here to see answer by drk(1908)

Question 253944: The area of a rectangle is 6720 square feet. The ratio of the width to the length is 7:15. Find the length and the width.
Click here to see answer by ankor@dixie-net.com(22740)

Question 254125: A farmer wishes to put a diagonal brace on his gate. How long should the brace be if the gate is rectangular 12 by 5 ft
Click here to see answer by nerdybill(7384)

Question 254125: A farmer wishes to put a diagonal brace on his gate. How long should the brace be if the gate is rectangular 12 by 5 ft
Click here to see answer by unlockmath(1688)

Question 254124: can 10, 20 and 30 can be the lenghts of the sides of the triangle? right triangle? Explain
Click here to see answer by dabanfield(803)

Question 254232: A box with a lid is to be made from a 48-by-24-inch piece of cardboard by cutting and folding, as shown in the figure. if the box must be at least 6 inches high, what size squares should be cut from the two corners in order for the box to have a volume of 1000 cubic inches?
(couldn't found figure, so please give me at least starting if u cant do without figure. i really need this problem to be done!!! plZZZZ). (thank you very much!!!!!)
Click here to see answer by solver91311(24713)

Question 254388: The Perimeter of a playing field is 504 yards and the length is 2 times the width minus six. What is the length and width?
Click here to see answer by palanisamy(496)

Question 254536: the question is i need the largest volume for a 10 square in surface area cone
Click here to see answer by Alan3354(69443)

Question 254586: The area of a square is 50. what is the length of the diagonal??
Thank you !
Click here to see answer by richwmiller(17219)

Question 254586: The area of a square is 50. what is the length of the diagonal??
Thank you !
Click here to see answer by solver91311(24713)

Question 254586: The area of a square is 50. what is the length of the diagonal??
Thank you !
Click here to see answer by jojo14344(1513)

Question 254769: 1. A rhombus with diagonals of lengths 18 and 30. What are the area???
2. An isosceles triangle with sides of lengths 10, 10 and 12. what are the area??
3.A rectangle has width represented by x and length 4x. if the area of the rectangle is 80. find the value of x?
Click here to see answer by dabanfield(803)

Question 254958: 1.Which ratio represent the number (PI, 3,14) ( One of them are correct)
A) Diameter:Radius
B) Diameter: Circumference
C) Circumference: Diameter
D) Circumference: Radius
THANK YOU IN ADVANCE
Click here to see answer by drk(1908)

Question 255083: Why do we take the right angled triangle only in trig?

Click here to see answer by richwmiller(17219)

Question 254749: how do you find the surface area of a square based pyramid with only the height of the pyramid itself and the width (of the base)?

Click here to see answer by CharlesG2(834)

Question 255171: My homework is on geometric probability. One of my problems has to do with a dart board. I am given that the Diameter of the outer double ring = 41 cm. the diameter of the inner double ring = 36 cm. the diameter of the outer triple ring = 25.6 cm. the diamter of the inner triple ring = 21.2 cm. the diamer of the outer bulls eye = 4.4 cm. and finally the diameter of the inner bull's eye = 1.4 cm. My question asks What is A) what is the probability that the dart will land IN the double ring B) What is the probability of hitting the single bull's eye and finally C) what is the probability of hitting the triple 20 ring. Please help as much as possible, I'd really appreciate it. Thank you!
Click here to see answer by dabanfield(803)

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