COMMON FORMULAS FOR PERIMETER AND AREA
WHAT IS FORMULA FOR VOLUME OF A CYLINDER?
V= r2 x H r2= radius squared
H= Height
SOLVE 5/8=N+1/4
N=5/8-1/4=5/8-2/8 N=3/8
CALCULATE THE CIRCUMFERENCE OF A CIRCLE WHERE DIAMETER = 125MM
C=PI x D
C=392.7MM
WHAT IS THE WEIGHT OF ONE CUBIC METER OF STEEL?
7850KG
IF THE BREAKING STRENGTH OF A 1 IN. DIAMETER WIRE ROPE IS 7000 kg ( 15432 lb), WHAT IS THE WLL FOR LIFTING WORKERS?
ANSWER IN KG AND LBS.
7000 kg divided by 10 = 700 kg
15432 lb divided by 10 = 1543 lb
WHAT IS THE FORMULA FOR VOLUME OF A CUBE?
V= x3 V= volume
multiplied x 3 sides.
SOLVE 3N = 123
123 divided by 3
N= 41
CALCULATE THE AREA OF A TRIANGLE WHERE B= 100MM AND H=75MM
A= BxH
2
A= 3750mm Squared
TWO PIECES OF STEEL PLATE MEASURING 38MM X 1352 MM X 3 M WOULD WEIGH...
WEIGHT= .038 m x 1.352 m x 3.0 m x 7850 x 2
weight= 2420 kg
CALCULATE THE WLL OF A BRIDLE HITCH WITH EQUAL LENGTH SLINGS THAT HAVE A WLL RATING OF 2000 kg.
H = 3 M
L = 4 M
WLL = 2000 x 3 x 2 divided by 4
WLL = 3000 kgWHAT IS THE FORMULA FOR CALCULATING CIRCUMFERENCE OF A CIRCLE?
C= PI X D PI= 3.1416
D= diameter
SOLVE X=2[13+(8-5)]
3+13=16X2=32
X=32
FIND THE VOLUME OF A SOLID ROUND STOCK THAT HAS A RADIUS OF 6cm AND A HEIGHT OF 12cm.
Pi ( radius squared) x H
3.1416 x 6 squared x 12cm= 1357.1712cm cubic
WHAT IS THE WEIGHT OF 3 PIECES OF 3/8 PLATE EACH MEASURING 4' X 8'?
.375 x 48" x 96" x .283 = 489lbs x 3 plates =1,467lbs
CALCULATE THE WLL OF A 3 SLING ARRANGEMENT WITH EACH INDIVIDUAL LEG OF THE SLING HAS A WLL RATING OF 1000 kg.
H = 3.5 m
L = 4 m
WLL= 1000 x 3.5 x 2 divided by 4
WLL = 1750 kg
WHAT IS THE FORMULA FOR AREA OF A CIRCLE?
A= PI R SQUARED PI = 3.1416
r = radius
SOLVE 5/9N-13=27
WHAT IS N
N=72
DOUBLE
CALCULATE THE AREA OF A TRIANGLE WHERE B=100mm AND H= 75mm
A= BxH DIVIDED BY 2
A= 100x 75 divided by 2 = 3750mm squared.
DOUBLE
A PIECE OF STEEL 1 FT SQUARE AND 1/4 IN. THICK WEIGHS ABOUT...
10LBS
IF POLYPROPYLENE ROPE HAS A WLL FOR MATERIALS OF 480 LB. WHAT IS ITS WLL FOR LIFTING PERSONNEL?
WLL = 220 x 5 design factor = 2400 = BREAKING STRENGTH DIVIDED BY 10
WLL = 240 LB
WHAT IS THE FORMULA FOR AREA OF A TRIANGLE?
A=1/2 BXH A= area
2 B= base
H= height
divided by 2
DOUBLE
SOLVE N+2(3-1)=84+2+2=8
N=4
WHAT IS THE VOLUME OF A RECTANGULAR BOX WITH THE FOLLOWING DIMENSIONS:
H=10"
L=10"
W=20"
L x W x H
2000 inches cubic.
WHAT IS THE WEIGHT OF A STEEL PIPE WITH MEASUREMENTS OF.. 10 MM THICK, 250 MM OD AND A LENGTH OF 3.8 M?
C=MD x PI wt.=T x W x L x 7850 kg
C=240 x 3.1416 wt.= .010 x .754 x 3.8 x 7850
C=754 MM wt.=225kg
DOUBLE
A WLL RATING OF A SLING IS 3000 kg. WHAT IS THE STRONGEST WLL YOU COULD GET IF YOU USE IT IN A SINGLE CHOKER HITCH?
WLL x 3/4 = 2250 kg