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

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Question 978751: The opposite pairs of sides of a square are increased by 40% and 30% respectively.The area of the resulting rectangle exceeds the area of square by?
a.42%
b.62%
c.82%
d.72%
Click here to see answer by Cromlix(4381)

Question 978761: The walls of a bathroom are to be covered with tiles 15cm by 15cm. how many tiles are needed for a bathroom of 2.7m long,2.25m width,3m high?
Click here to see answer by Cromlix(4381)

Question 979206: the side of a square hall is 15 meters each.if square tiles of side 1/2 meters each had to be used to pave the floor, how many tiles will be needed? the tiles come from the shop in boxes having 100 tiles in each box. how many boxes of tiles have to be purchased to cover the floor completely??
Click here to see answer by Cromlix(4381)

Question 979619: For a four sided pyramid that has a height of 3 meters, how long is each corner? (Base to centerpoint on top)
Click here to see answer by Alan3354(69443)

Question 979763: If a cardboard tube is cut vertically, it is a rectangle. What is the surface area is a cardboard tube that is 4 inches long with a circumference of 5 inches?

Click here to see answer by Alan3354(69443)

Question 979879: The surface area (A) of a sphere with the radius (r) is given by A = 4(3.14)r^2. Solve the formula for r.
Click here to see answer by Alan3354(69443)

Question 980077: The floor of a one story building is 14 feet longer than is wide. The building has 1472 square feet of floor space:
a) write quadratic equation for the area of the floor in terms of width.
b) find the length and width of the floor:
w=
l=
Click here to see answer by Boreal(15235)

Question 980109: I am making a seven sided shape,each side has a measurement of 30 "what is the total ground area in square yards.
Click here to see answer by Edwin McCravy(20055)

Question 980267: The area of a triangle varies jointly with the height of the triangle and the length of its base. The area of one triangle is 200 square centimeters when its height is 25 centimeters and its base length is 16 centimeters. What is the area of a triangle having a height of 20 centimeters and a base length of 15 centimeters?

Click here to see answer by Alan3354(69443)

Question 980227: What is the surface area of the triangular prism shown with height 5 feet? You can use the formula: SA = 2B + PH.
https://racine.brainhoney.com/Resource/26948139,0/Assets/flvs/math1_v10_gs-xml/res0116/08_00_87_01.gif
Click here to see answer by Alan3354(69443)

Question 980471: A triangular sheet of metal has sides 16 cm, 18 cm, and 20 cm long respectively. How far from the vertex must it be cut to the 20 cm side so that the two points will have the same area?
Click here to see answer by josgarithmetic(39617)

Question 980523: a circular piece of paper of radius 20 cm is cut in half and each half is made into a hollow cone by joining the straight edges. Find the slant height and the base radius of each cone
Click here to see answer by ikleyn(52781)

Question 980755: The surface area (A) of a sphere with radius (r) is given by A=4πr^2. Solve this formula for r.
Click here to see answer by Alan3354(69443)

Question 980813: What is the area of a rhombus 3ft by 2ft
Click here to see answer by Boreal(15235)

Question 981113: A semi circle is attached to a triangle. What is the total area of the shape ,if the radiusof the semi circle is 2 cm and the height kf the triangle is 5 cm
Click here to see answer by josgarithmetic(39617)

Question 981150: Find the surface area of a cylinder with a diameter of 50 and a height of 14. Use 3.14 for π
Click here to see answer by Alan3354(69443)

Question 981171: Find the total surface area and volume of a Coke Tin of diameter 28cm and height 12cm.
Click here to see answer by solver91311(24713)

Question 981372: Find the area and perimeter of each of the shaded regions.Take pie=3.14 and give your answer correct to 3 significant figures . all measurements are in cm:
there is a circle shaded with an un-shaded circle inside, the inner one has a radius of 6 cm and the outer circle has a radius reaching the inner circle as well of 10 cm both radius are joined at one point but at different angles.
Click here to see answer by josgarithmetic(39617)

Question 981402: One of the side of a rectangle is 3m shorter than the other one. Find the sides of the rectangle if we know that if we increase every side with 1m, the surface of the rectangle will be increase with 18 meter square.
Click here to see answer by macston(5194)

Question 981443: the total surface area of a cone is 628 Cm2.If its slant height is 17 Cm. find the radius of the base of the cone
Click here to see answer by macston(5194)

Question 981449: the area of a parallellogram is 123cm2.Had the base been reduced by 4 Cm the area would have been less by 32 cm2.find the original base of the parallelogram
Click here to see answer by josgarithmetic(39617)

Question 981528: one of the sides of a rectangle is 3 meters shorter than the other one. Find the side of the rectangle if we know that if we increase every side with one meter the surface of the rectangle will be increased with an 18m^2.
Click here to see answer by josgarithmetic(39617)

Question 981585: The length of a cube is 8 cm. Calculate the surface area
Click here to see answer by Boreal(15235)

Question 981585: The length of a cube is 8 cm. Calculate the surface area
Click here to see answer by MathLover1(20849)

Question 981600: A closed cylindrical vessel of length 20 cm and diameter 10.5cm is to be made from a liht metal sheet. What is the total area of the sheet required for it?
Click here to see answer by stanbon(75887)

Question 981598: A circle is inscribed in a square of side 7root 2 cm. Find the total area of the four segments of the square outside the circle.
Click here to see answer by josgarithmetic(39617)

Question 981752: The radius and height of a rught circular cone are 21 n 28cm. From its base to a height of 14 cm the portion of the curved surface was painted golden and the upper portiob as silver. Find the total cost of painting the whole curved surface at the rate of Rs50 /cm^2 for the golden colour and at the rate of Rs 40/cm^2 fir the silver colour.
Click here to see answer by mananth(16946)

Question 981797: If the surface area of a cone of radius 6m is 96 pi, find the volume of the cone
Click here to see answer by Cromlix(4381)

Question 982022: a rectangle with area 50 sq cm can be divided into 2 same squares. on each side of the rectangle on the outside is constructed an equilateral triangle. find the perimeter of the obtained octagon.
Click here to see answer by macston(5194)

Question 982266: The question is ( make the following measurements of an object 22kg and 42m3,what would the density be? May you show me how you get your answer Thanks
Click here to see answer by macston(5194)

Question 982326: what will be the area of a lanter or cement flooring where the length is 143 feet and breadth is 13.10 feet. Please show the solution and also the conversion of inches and feet
Click here to see answer by mananth(16946)

Question 982676: A balloon has a circumference of 28 in. Use the circumference to approximate the surface area of the balloon to the nearest square inch.

Click here to see answer by Alan3354(69443)

Question 982803: Calculate the surface area of a room that has length of 10m and width of 6m
Click here to see answer by Cromlix(4381)

Question 982924: i have a 20.5" cylinder (core) and I need to put 1800' of material on the outside of it. the material is .022 thick. what would the diameter be of the material after it has all of the material on it?
better yet, how can I do this calculation with different size cylinders, different gauges and different lengths?
thank you in advance for your efforts.
-michael
Click here to see answer by Alan3354(69443)

Question 983285: The volume of a rectangular solid is (x^3 + 3x^2 + 2x - 5)
Cubic cm and length is given by (2x-3) units, what expression represents its width?
Click here to see answer by josgarithmetic(39617)

Question 983385: If the sides of a square are decreased by 3 cm, the area is decreased by 81 cm^2. What were the dimensions of the original square?

Click here to see answer by macston(5194)

Question 983388: The area of the rectangle is represented by 5x^2 + 19x + 12. What is the length?
Width=5x + 4

Click here to see answer by jim_thompson5910(35256)

Question 983388: The area of the rectangle is represented by 5x^2 + 19x + 12. What is the length?
Width=5x + 4

Click here to see answer by mananth(16946)

Question 983388: The area of the rectangle is represented by 5x^2 + 19x + 12. What is the length?
Width=5x + 4

Click here to see answer by josgarithmetic(39617)

Question 983395: The formula for the force (F) is.....
Click here to see answer by Timnewman(323)

Question 983433: How much will the square tiles for a floor 2.7 meter long and 2.1 meter wide cost if each tile is 15 centimeter on a side and each costs $25?
Click here to see answer by ikleyn(52781)

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