148
volume_cuboid = length × width × height = 4 ft × 2.3 ft × 5 ft = 46 cu ft surface_area_cuboid = 2 × (length × width + width × height + height × length) = 2 × (4 ft × 2.3 ft + 2.3 ft × 5 ft + 5 ft × 4 ft) = 2 × (9.2 sq ft + 11.5 sq ft + 20 sq ft) = 2 × 40.7 sq ft = 81.4 sq ft
surface area of a spere=4*pie*r2 when r (radius)=5 pie=22/7 surface area=4*22/7*5*5 =2200/7 =314.2 dm2
Surface area of the sphere: 4*pi*52 = 100*pi square units
25
If by 20 ft, you mean the perimeter, I would separate the octagon into shapes that I do know how to get the area of. So 20 ft divided by 8 sides = 5/2 ft per side. Separate this into 5 squares and 4 right triangles. So that's (5/2)^2 times 5 squares plus the area of 4 right triangles, or 2 squares - (5/2)^2 times 2 squares. 5*(25/4)+2(25/4). (125/4)+(50/4)=(175/4). 43.75 sq. ft.
a. 2 to 5.
Surface area = 2*(3*4 + 4*5 + 5*3) = 2*(12 + 20 + 15) = 2*47 = 94 sq ft.
All that can be said is that it is not a plane (flat) surface.
volume_cuboid = length × width × height = 4 ft × 2.3 ft × 5 ft = 46 cu ft surface_area_cuboid = 2 × (length × width + width × height + height × length) = 2 × (4 ft × 2.3 ft + 2.3 ft × 5 ft + 5 ft × 4 ft) = 2 × (9.2 sq ft + 11.5 sq ft + 20 sq ft) = 2 × 40.7 sq ft = 81.4 sq ft
30 ft3
With a rectangular prism with these dimensions, you'd have 2 sides with an area of 15*5, two sides with an area of 5*4 and two sides with an area of 4*15. The surface area is 15*5+15*5+5*4+5*4+4*15+4*15 = 310.
6 x 5 x 4 and 7 x 6 x 4 qualify. 6 x 2 x 3 and 8 x 4 x 3 do not.
perimeter of a square = 4 * root of the area. Perimeter = 4 * root 25 = 4 * 5 = 20 ft
surface area of a spere=4*pie*r2 when r (radius)=5 pie=22/7 surface area=4*22/7*5*5 =2200/7 =314.2 dm2
4 ft.
The formula for the surface area of a sphere is 4 (pi) r2For a radius of 5 in, the surface area is4 (3.1416) (5)2 = 4 (3.1416)(25) = about 314.16 square inches
The surface area is about 314.16 cm2The formula for the surface area of a sphere is 4 (pi) r2For a radius of 5 cm, the surface area is4 (3.1416) (5)2 = 4 (3.1416)(25) = about 314.16 cm2*Do not confuse the sphere's surface area formula SA = 4 (pi) r2 withthe formula for the volume of the sphere, which is V = 4/3 (pi) r3