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Find the area of an equilateral triangle that has a perimeter of 21 inches Round the answer to one decimal place? Find the area of an equilateral triangle that ...


Find the height of an equilateral triangle with side lengths of 8 cm. 8/2 = 4 4√3 = 6.928 cm. When do you use decimals and when do you use the answer with a square root. ... Common Core Standard 6.G.1. equilateral triangle perimeter # perimeter triangle ... Find the area of a equilateral triangle with a side of 8 units. Step 1.


Sal finds a shaded area defined by two equilateral triangles whose side ... 0 energy points ... Show all 5 answers to Crimson Dragon's question • Answer this question ... like why the perpendicular bisector at 2:40 is equal to (√3*s)/2 ? 6 Votes ... find the area of the square than subtract both of them together, in this case if the ...


SOLUTION: Find the area of an equilateral triangle that has a perimeter of 21 inches. Round the answer to one decimal place. ... So if we know the perimeter of a triangle is 21 inches, we can divide that by 3 to find the length of each side:


A worked example of finding the area of an equilateral triangle inscribed within ... So if this is side length a, then this is side length a, and that is also a side of length a. ... So from the center to the circumference at any point, this distance, the radius, ... And the central angle that is subtending that same arc is this one right here.


If we find the area of one of the triangles, then we can multiply it by six in order to calculate the area of the .... Round the answer to the nearest whole number.


So all three angles of the triangle are equal and therefore it is an equilateral triangle. Hence AB = OA ... 6 sided polygon (hexagon) problem 1. Solution to ... OM is the radius of the inscribed circle and is equal to 6 cm. ... Problem 3: Find the area of a dodecagon of side 6 mm. (approximate your answer to one decimal place).


Apr 6, 2009 ... If x is the length of one side of an equilateral triangle, then its perimeter is equal ... When a point of coordinates (x , y) is reflected on the x axis, its y ... h 2 = 8 2 + 6 2 = 100 ... (round your answer to the nearest tenth of a foot). ... Find the length of the base if the corresponding base is 3 cm more then the height.


exactly in the area H. ... If the lengths of two sides of a right-angled triangle are given, then Pythagoras' ... Calculate the length, correct to 1 decimal place, of the unmarked ... Pythagoras' theorem to find the value of the unknown shorter side, e.g., .... Give your answers correct to 2 decimal places. a. 10. 16 x b. 168 mm. 12 cm.