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In an isosceles trapezoid ABCD, the diagonal AC is perpendicular to the side, angle D = 60 *, AD = 20 cm, BC = 10 cm. Find the
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education
These tasks: V (volume of taken copper) = 1 m3; m (copper mass) = 8900 kg. To determine the required copper density, we will use the formula: ρm
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education
These tasks: t (operating time of the used heat engine) = 1 h (in SI t = 3600 s); Np (useful power) = 2 kW (2 * 10
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education
The volume of the rectangular parallelepiped is 84 cm3. This parallelepiped was divided into two parts. Find the volume of each part if: a) the volume of one
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education
What mass of water can be heated from 20 degrees Celsius to 80 C due to the energy consumed in 10 minutes by kettles connected to a 220
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education
Since the value of the distance between the molecules corresponds to their own size (the diameter of the molecule is approximately equal to 10-6 mm), it is possible
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education
A circle is described around the square and a circle is inscribed in the square. Find the area of a circular ring if the area of the square
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education
The radius of a circle circumscribed about a square: R = a / √2; where a is the side of the square; = 2√2: √2 = 2 (cm);
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education
The median of the base of a regular triangular pyramid is 6 cm, the height of the pyramid itself is √5 cm. Find the total surface area of
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education
Before finding the radian measure of the angles of triangle ABC, we first find out the degree measure of the angle C. According to the rule, the sum
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