Question

solve all questions please

(Units 23-28, PPM for Drafting and CAD, 4th Ed.) 1. How many 40-degree central angles are in a circle? ID: 2. Express 13 feet 2 1/16 inches in inches. 158.062 13 2116 X 12 13 x 12 = 156'2" 116 158 '16 3. The measure of one angle is 7° 55'. What is the total number of degrees and minutes in 4 of these angles? 28° 4 55 4. The floor area of a blueprint room is 68 square meters. What is the area to the nearest hundredth square yard? 5. What is the area of a washer with an inside diameter of 1 1/2 inches and an outside diameter of 3 1/4 inches? Express the answer to the nearest thousandth square inch. DRAW THIS! 6. On a drawing 1 inch represents 100 feet, if the measurement of a drawing of a plot plan is 3 7/8 inches, determine the actual length to the nearest foot 388 ft

Answer 1

Since Complete angle at centre in circle No. of toº central ongles in corele = 40 2 16 13 feet 21 inches = 113 x12 + 21 ) inches I feet laineler 16 (since = 156 +21 IG - 2496 +2] 16 2517 inches 16 3 7955 measure of one angle measur of 4 such angles = (7055) X4 -8 32 0' 1° = 6omin 1 min = 6o = 990' = 0 3x60'+ 40 3° 40') measure of 4 Buch angles = 31' 40

68 m² 4. The floor area of a blue point room We have to find nearest hundreth square yard, 1.9936 yard Im = 1, 19596096 yand Since I meter = 68 m² Me floor area of a blueprint room = 81.32534528 yard 100 yard nearest hundreth square yard