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The surface area consists of the circular base and the sloped side. By cutting the sloped side from the apex to the base, it can be "flatten" out into a sector of a circle - the length of the arc is the same as the circumference of the base, and it is a fraction of the whole circle with radius of the slant height, which can be applied to the area of the circle. → surface area = area case + area sloped side = π × 5² + (π × 7²) × (2 × π × 5)/(2 × π × 7) = 25π + 49π × 5/7 = 25π + 35π = 60π square units ≈ 188.5 square units
I'm assuming that your figure is a rectangular prism. Here are the calculations to find the surface area:5*7*2=705*6*2=607*6*2=8470+60+84=214 un2
Is the question What is the AREA of a 5 inch by 7 inch photograph? The area of the photograph is 5 x 7 = 35 square inches. But if you are asking how much surface area does a 5 inch by 7 inch photograph have, you have to consider the area of both the front and the back of the photograph or 70 square inches.
The surface area of a cylinder = height * 2 * pi * radius So, since we know the surface area, and the height, we can rearrange the equation: radius = Surface Area / (height * 2 * pi) = 88/(14 * 2 * pi) = 22/ (7*pi) = approx 1 cm. So the diameter, is 44/ (7*pi) = approx 2 cm.
The formula in getting the surface area of a cylinder is 2 pi r2 + 2 pi r hSAC = (2)(3.14)(7)2 + (2)(3.14)(7)(25)= (2)(3.14)(49) + (2)(3.14)(7)(25)= (6.28)(49) + (6.28)(175)= 307.72 + 1099SAC = 1406.72 cm3