a sector of a circle of radius 10cm has the angle as 90°.it is rolled up so that the two bunding radii are joined together to from a cone .find the volume of the cone
Oil Refinery A drilling rig 12 mi offshore is to be connected by a pipe to a refinery onshore, 20 mi down the coast from the rig as shown in the figure. If underwater pipe costs S40,000 per mile and land-based pipe costs$30,000 per mile, what values of rand y give the least expensive connection?
Finding Height 0 find the height of a lamppost (see figure you stand a 6-ft pole 20 ft from the lamp and measure the length a of its shadow, finding it to be 15 ft, give or take an inch. Calculate the height of the lamppost using the value a E 5. and estimate the possible error in the result.