##(72)/2## It is a 45-45-90 triangle It is a isosceles Rt two catheti are equal to each other. Pythagoras theorem cathetus + cathetus = hypotenuse 2 […]
The perimeter is ##10+3sqrt{3}+sqrt{127}## units. The hypoteneuse squared is 127. One leg squared is 100. The other leg squared must be the difference ##127-100=27##. Thus the […]
Use the Pythagorean identity to manipulate the right-hand side: since ##sin^2x+cos^2x=1## we know that ##-1=-sin^2x-cos^2x##. We can plug these in for the ##-1## and ##1## in […]
##(4x-16)cms## Let the length be ##color(red)(x## Then The width will be written as ##color(red)(x-8## (Width of rectangle is ##8cm## less than length ) Perimeter of rectangle=##color(blue)(2(l+b)units## […]