height = 3m The area (A) of a triangle is. ##color(red)(|bar(ul(color(white)(a/a)color(black)(A=1/2bh)color(white)(a/a)|)))## where b is the base and h the perpendicular height. here A = 3.75 and […]
Lateral area is ##72pi## square centimeters. As volume is ##pir^2h## where ##r## is radius and ##h## is height ##36pi=pir^2xx9## or ##36pi=9pir^2## Hence ##r^2=(36pi)/(9pi)=4## or ##r=2## Now […]
Consider a circle of radius ##8## centimetres. Recall that the centre angle in a circle is always ##360##. However a semi-circle is a circle cut in […]