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Cylinder radius 6 cm height 5 cm to the nearest whole sq cm?
I assume that you're talking about surface area. If so, imagine making a cylinder out of paper. You would have two circles, and between them a rectangle rolled up, right? So let's address the circles first. If the radius is 6 cm, then each circle's area (pi x radius squared) is: pi x (6 x 6) = 36pi = 113 sq cm Now we need to address the rectangle. Picture unrolling it. We would have a rectangle with a height of 5 cm and a length equal to the circumference of the base, right? So figure out the circumference. It (pi x D) is: pi x (2 x 6) = 12pi = 37.7 cm The area of the rectangle (base x height) is: 37.7 x 5 = 188.5 sq cm So, to get the total surface area, we add the rectangle (188.5 cm) and the TWO bases (113 sq cm x 2 = 226 sq cm), or 188.5 + 226 = 414.5 sq cm, rounded to the nearest, 415 sq cm
What is the surface area of a cube that is 2 cm x 2cm x 2 cm?
A cube has 6 faces each face is area 2x2 = 4 square cm surface area = 6 x 4 = 24 sq cm
What is the perimeter of a rectangle 7cm x 4cm?
22 cm
Square root of 484?
Find the factors of 484484= (4)(121)Square root of (484) = Sq. root (4 x 121) = Sq. root (4) x sq. root of (121) = 2(11) = 22
Find the area of a rectangular photo that is 20cm long and 15cm wide?
area = length x width = 20 x 15 = 300 sq cm
