I just need clear solution how to the answer is correct, i will use it as my reviewer.

CECC481 CE comprehensive course 1

The base diameter of a right circular cone is 16 cm. If the lateral area is 506.5 cm . find its volume in cm Select one Q a 1,320 cm b. 1,240 cm3 c. 1,090 cm d. 1,180 om x Your answer is incorrect. The correct answer is: 1,240 om A quadrilateral ABCD is inscribed in a circle with AB as the diameter. BC = 6 cm, CD - 5 cm. and DA = 3 cm Angle DAB measures 680, Find the diameter AB of the circle, Select one Q a. 12 cm @ b.9 cm c. 10 cm x O'd 8 cm Your answer is incorrect The correct answer is, 8 cm A boat has a mass of 20600 kg. A model of the boat is made to a scale of 1:80. If the model is made of the same material as the boat. determine the mass of the model. select one: O a 38g O b. 39 g c. 36 g x O d. 37 g Your answer is incorrect. The correct answer is. 39 gPoint P is on BC of the triangle ABC such that AB = AC = BP. If PA = PC, find the value of the angle ABC. 1 of Select one: a: 32 b. 360 v Q c. 30 O d. 390 Your answer is correct The correct answer is: 360 Three circles are tangent to each other externally. The distances between their centers are 12 cm. 15 cm, and 17 cm respectively. Find the radius of the smallest circle. t of Select one: @ a. 6 cm @ b. 5 cm O c. 12 cm d. 10 cm x Your answer is incorrect. The correct answer is 5 cm A circle is circumscribing triangle ABC with sides a = 16 cm, b = 20 cm, and an altitude of 8 cm to the side c Find the radius of the circle t of Select one: O a. 22 cm O b. 25 cm c 20 cm v O d. 24 cm Your answer is correct. The correct answer is: 20 cmA square ABCD has sides equal to x. Point E is inside the square and forming an equilateral triangle ABE with sides equal to x. Compute angle ADE. Select one: 0 8 1200 b. 750 C c. 150 d. 609 x Your answer is incorrect The correct answer is 750 If the arcsine of ( x - 2y ) is 0.5236 and arccosine of ( 3x - 4y ) is 31416, find the value of x. Select one: O a. 5/4 D b - 2 D C. - 5/4 d. 2 x Your answer is incorrect The correct answer is - 2 In the quadratic equation 3x2 + Bx + 2 = 0, find the value of B so that one root is six times the other Select one 87V O b4 O c. -6 Od 4 Your answer is correct The correct answer is: 7A parallelogram has sides 10 cm and 16 cm Find the length of the shorter diagonal if its area is 140 square cm. Select one a. 12.78 cm O b 13.50 cm C c. 11.94 om d. 14.18 cm Your answer is correct The correct answer is 14 18 am A spherical tank has a radius of 15 cm. If the volume of water in the tank is 1,950 cu.cm, determine the depth of the water, in cm. Select one: a. 8 cm x b. 5 cm c. 6 cm d. 7 om Your answer is incorrect. The correct answer is: 7 cm The length of the common chord of two circles intersecting each other is 48 cm. long The distance between their centers is 17 cm. and the radius of one circle is 26 cm, compute the diameter of the other circle Select one a. 20 cm b. 26 cm c. 24 om x @ d. 25 cm Your answer is incorrect. The correct answer is: 25 cm