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54 — C
ONSTRUCTION
M
ASTER
®
P
RO
/ T
RIG
/ D
ESKTOP
Complex Concrete Volume
You’re going to pour an odd-shaped patio 4-1/2 inches deep with the
dimensions shown below. Calculate the total area (by dividing the
drawing into three rectangles) and determine the total yards of con-
crete required. Then, find the total cost, if concrete costs $45 per
cubic yard.
KEYSTROKE DISPLAY
1. Find area of Part A and store into Memory:
o o 0.
2 4 f 6 i – 24 FEET 6 INCH
7 f = 17 FEET 6 INCH
x 2 7 f = 472.5 SQ FEET
µ M+ 472.5 SQ FEET
2. Find area of Part B and store into Memory:
7 f 7 FEET
x 9 f = 63. SQ FEET
µ M+ 63. SQ FEET
3. Find area of Part C and store into Memory:
9 f 9 FEET
x 9 f = 81. SQ FEET
µ M+ 81. SQ FEET
(Cont’d)
M
M
M
M
M
M
M
4065UG-E-B 6/9/04 1:49 PM Page 54
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