A cube has 6 square faces. The area of a square is equivalent to the square of its side (i.e. s² or 7² to be exact). Therefore the area of a singe face of the cube, which is a square, is to be multiplied by 6 in order to achieve the answer. Therefore we have an equation of:
Imagine that the cylinder is a can; then, take apart the parts of the can (i.e. top, body, & bottom). Notice that the top and bottom parts are both circles while the body is a rectangle having one of its parallel pairs attached to each other. This means that we need to find the sum of the areas of both circles and the rectangle. Therefore we have an equation of:
See that the figure has 4 rectangular faces of the same size and 2 separate rectangular faces of the same size also. Therefore the surface area of this figure could be obtained by adding the areas of the 6 faces in total. Therfore the equation to solve for the surface area of the given figure is:
The formula for the surface area of a sphere is 4πr² which is:
The figure has 4 triangular faces and a square base meaning:
Answers & Comments
Answer
1. 294 cm^2
A = 2 x 7^2 + 4 x 7 x 7
A = 294 cm^2
2. D ko po masyado makita yung number sorry po
3. 288 cm^2
S = 2LH + 2LW + 2WH
L = 12 cm
H = 4 cm
W = 6 cm
S= 2 X 12 X 4 + 2 X 12 X 6 + 2 X 6 X 4
S = 96 + 144 + 48
S = 288 cm^2
4. 277.45![in^{2} in^{2}](https://tex.z-dn.net/?f=in%5E%7B2%7D)
S = 4![\pi \\ ><img src=](https://tex.z-dn.net/?f=%5Cpi%20%5C%5C)
S = 4 x 3.14 x![4.7^{2} 4.7^{2}](https://tex.z-dn.net/?f=4.7%5E%7B2%7D)
S = 4 x 3.14 x 22.09
S = 277.45![in^{2} in^{2}](https://tex.z-dn.net/?f=in%5E%7B2%7D)
5. 161.28 yd^2
S= a^2 + 2a![\sqrt{\frac{a^{2} }{s} } + h^{2} \sqrt{\frac{a^{2} }{s} } + h^{2}](https://tex.z-dn.net/?f=%5Csqrt%7B%5Cfrac%7Ba%5E%7B2%7D%20%7D%7Bs%7D%20%7D%20%2B%20h%5E%7B2%7D)
S =![6^{2} + 2(6)(\sqrt{\frac{6^{2}}{4} + 10^{2} 6^{2} + 2(6)(\sqrt{\frac{6^{2}}{4} + 10^{2}](https://tex.z-dn.net/?f=6%5E%7B2%7D%20%2B%202%286%29%28%5Csqrt%7B%5Cfrac%7B6%5E%7B2%7D%7D%7B4%7D%20%2B%2010%5E%7B2%7D)
S = 161.28 yd^2
Answer:
Step-by-step explanation: