Tutors Answer Your Questions about Surface-area (FREE)
Question 1102936: The 4th grade class wants to purchase a rug for the room. Each sq ft of the rug cost $13. The rug they want to buy is 14 ft long and 23 feet wide. question 1 : How big is the rug ? question 2 : How much will the rug cost ? could you please show us how you come to the answer Thank you
Click here to see answer by Alan3354(69443)   |
Question 1103372: a 10cm by 12cm rectangular container contains some water. When a solid metal cube with volume 216 cm3 is placed in the water, the water level comes up level with the top of the cube. In cm, what was the original height of of the water in the container
Click here to see answer by Alan3354(69443) |
Question 1103372: a 10cm by 12cm rectangular container contains some water. When a solid metal cube with volume 216 cm3 is placed in the water, the water level comes up level with the top of the cube. In cm, what was the original height of of the water in the container
Click here to see answer by ikleyn(52781)  |
Question 1103623: Suppose you have an equilateral triangle with a height of h feet. Then its area is
A= square feet.
Hint: Draw the right triangle and its height. The area of the triangle equals of base times height. You know the height. Use the Pythagorean Theorem to figure out the base. Use sqrt() to enter the square root of something.
Click here to see answer by Boreal(15235)  |
Question 1103623: Suppose you have an equilateral triangle with a height of h feet. Then its area is
A= square feet.
Hint: Draw the right triangle and its height. The area of the triangle equals of base times height. You know the height. Use the Pythagorean Theorem to figure out the base. Use sqrt() to enter the square root of something.
Click here to see answer by addingup(3677)  |
Question 1104761: I have an equilateral triangle with 4(pi) as each of its sides. Using the formula for finding the area of equilateral triangles {[(b^2)(sqrt3)]/4} I got (sqrt3)(pi^2) However, working through the entire problem manually, I got 2(sqrt2)(pi^2). Is one of those solutions right? If not, can you help me find the correct process to get the correct solution? Thank you!
Click here to see answer by josgarithmetic(39617) |
Question 1104854: I have this problem: The area of a rectangle is (25)(pi^2) cm^2. What is the diameter of a circle that has the same area as the area of the rectangle? My answer was 10pi. The textbook's answer was 10sqrtpi. What did I do wrong? Thanks for your time!
Click here to see answer by josgarithmetic(39617) |
Question 1104854: I have this problem: The area of a rectangle is (25)(pi^2) cm^2. What is the diameter of a circle that has the same area as the area of the rectangle? My answer was 10pi. The textbook's answer was 10sqrtpi. What did I do wrong? Thanks for your time!
Click here to see answer by ikleyn(52781) |
Question 1104899: Hi! I have a problem that says that the area of the trapezoid (which is 12, by the way...no units were indicated for some reason) is equal the area of the circle. What is the radius of the circle? My answer was sqrt(12/pi). However, I am very unsure of my answer. Am I right? Thanks for your time!
Click here to see answer by Alan3354(69443) |
Question 1105024: A sphere has a great circle with a circumference of 330 centimeters. (a) What is the radius of the sphere? (b) What is the surface area of the sphere? Round the answers to the nearest tenth and label the answers correctly.
Click here to see answer by Boreal(15235) |
Question 1105141: graduated cylinder, pictured, is used to measure solutions in a laboratory. It is open at the top and closed at the bottom.
If a graduated cylinder has a height (h) that is 4 cm more than its radius (r) and a surface area of 16p cm2, use the equations below to calculate the diameter of the graduated cylinder. Give exact answer in fraction form.
Area of the side of a cylinder = 2πrh
Area of the top or bottom of a cylinder = πr2
Click here to see answer by josgarithmetic(39617) |
Question 1105621: Find the exact area enclosed between the curve y = sqrt(4 − x^2) and the line x+2=y.
I have found the area simply by using the area of the quadrant of the circle minus the area of the triangle to get an answer of pi-2.
I've tried to integrate but it didn't get the right answer, could you check my working or work it out for yourself?
There was too much to write so I took a photo of my working instead: https://imgur.com/a/ziZlG
Click here to see answer by Alan3354(69443) |
Question 1105723: If the area of the patio is 45, then what is the minimum number of square-tiles with sides of 30 cm that are needed to cover the patio if 10% more tiles will be needed to cover the non-rectangular shape of the patio?
Click here to see answer by Alan3354(69443) |
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Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840
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