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Volume of triangular prism?
I think first you calculate the area of the triangular face. If you forgot that's ok. The formula is A= bxh divided by 2 which is the same as the area of a triangle is base multiplyed by height and divided by two. Then you need to know the length of the prism(the length of the rectangle)and multiply them together. So your calculation should look like this: Triangular face- A=bxh divided by 2 let's say that the base of the triangle is 5 cm and the height is 12cm Length of prism- let's say the length is 25 cm A=bxh divided by 2 A=5 x 12 divided by 2 A = 20 divided by 2 A = 30 cm squared 30 x 25 = 750cm squared( little 2)
In triangle ABC with right angle at C if a equals 10 cm and angle B equals 59 degrees then c equals 11.67 cm Rounded-off to two decimals?
Absolutely not!If C is the right angle, then by conventional notation, c is the hypotenuse and so is the longest side!
If A ladder leaning against a wall makes a 60 angle with the ground the base of the ladder is 3 m from the building how high above the ground is the top of the ladder?
This answer uses trigonometry to avoid a lot of work:tangent = opposite/adjacent and tangent*adjacent (base of ladder from the building) = opposite (height of ladder above ground)So: tangent 60 degrees*3 = 5.196152423Therefore: Top of the ladder above ground = 5.2 meters correct to one decimal place.More laborious methodThe right triangle formed by the wall, ground and ladder has sides in the ratio of 1::2::sq-rt-of-3. The shortest side is the one opposite the 30 degree angle, i.e., the given distance from wall to base of the ladder--3 m.The length of the ladder represents the hypotenuse of the triangle, and is twice as long, hence 6 m.And the height of the ladder's top from the ground is proportional to the third side whose length is sq-rt-3 times that of the shortest side. Sq-rt-3 is about 1.732, so height of the ladder's top at the wall is about 5.20 m, or 520 cm.
Diameter of a ball that is 8cm deep and 24cm wide?
The width of a ball is its diameter, so the diameter of a ball that is 24 cm wide is 24 cm.
What is the volume of a sphere with a radius of 15 cm?
The volume is 14,137.2 cm3
What is the area of a regular octagon with a side length of 5.8 centimeters and an apothem length of 7 centimeters?
An octagon with a side length of 5.8 cm has an apothem that is approximately 7 cm. The area of such a shape is approx 162.4 sq cm.
What is the area of a regular octagon with a side length of 5.8 centimeters and a apothem of 7 centimeters?
An octagon with a side length of 5.8 cm has an apothem that is approximately 7 cm. The area of such a shape is approx 162.4 sq cm.
What is the length of one side of a octagon if its perimeter is 128 cm?
perimeter of octagon is 128 cm= 8 * side side of the octagon=128/8=16 cm
A regular octagon with sides of length 7 and an apothem of length 8.45 has an area of how many square units?
By Apothem LengthThe area of a regular octagon can also be computed using its measured apothem (a line from the center to the middle of any side). The formula for an octagon with side length s and apothem a is Area = a4s (apothem times one-half the perimeter)So for this example, (7 cm and 8.45 cm) Area = (8.45)(28) = 236.6 cm2----By Side LengthThe area of a regular octagon with side length s is given as Area = 4.828427 s2 , so for a regular octagon of side length 7 cm , the area is also about 236.6 cm2.(This formula is generated by adding or subtracting the missing corner triangles.)
A regular octagon with sides of length 8 and an apothem of length 9.66 has an area of how many square units?
By Apothem LengthThe area of a regular octagon can also be computed using its measured apothem (a line from the center to the middle of any side). The formula for an octagon with side length s and apothem a is Area = a4s . (apothem times one-half the perimeter)So for this example, (8 cm and 9.66 cm) Area = (9.66)(32) = 309.12 cm2----By Side LengthThe area of a regular octagon with side length s is given as Area = 4.828427 s2 , so for a regular octagon of side length 8 cm , the area is calculated as 309.02 cm2. (indicating an error from rounding the apothem length)(This formula is generated by adding or subtracting the missing corner triangles.)
A rectangle and a regular octagon share a common side If the length of the rectangle is twice its width and the perimeter is 36 cm what is the perimeter of the octagon?
Length + width = 18 cm so length = 12 cm and width = 6 cm. Presumably the length is the common side so the perimeter of the octagon is 8 x 12 = 96 cm. If the width is the common side then the perimeter of the octagon is 8 x 6 = 48 cm
What is the perimeter of a regular octagon with side length 8 cm?
64 cm
The perimeter of a regular octagon is 40 cm what is the length of each side?
An octagon has eight sides, in this case all the same length. Total length of eight sides = 40 cm. Length of each side = 40 divided by 8 equals 5 cm
What is the area of a regular octagon with an apothem of 9.3 cm and a side length of 7.7 cm?
Octagon is equal in area to 8 rectangles, length 9.3, width 7.7/2 ie 3.75. Area of each of these is 35.805 sq cm so total area is 286.44 sq cm. Alternatively you can mutiply the square of the apothegm by 3.314 (8/tan 67.5) which gives 286.6.
What is the perimeter of a regular octagon whose side measures 7 cm?
Multiply the length of one side (7 cm) by the number of side (8) to see that the perimeter is 56 cm. This works because a regular octagon has 8 sides of equal length..
What is the length of one side of a regular octagon if its perimeter is 72 cm?
It is 72 cm/8 = 9 cm.
A regular octagon has a perimeter of 40cm what is the length of one side?
If a regular octagon has a perimeter of 40cm, then each side is 5 cm.
