If l=5 cm , b=6 cm and h = 5 then TSA of cuboid is
20 points

170cm²

Step-by-step explanation:

This problem bothers on the mensuration of solid shapes, a cuboid.

Given data

Length l=5 cm ,

Breath b=6 cm and

Height h = 5

We know that the total surface area of a cuboid is expressed as

SA=2lb+2lh+2hb

SA= 2(5*6)+ 2(5*5)+2(5*6)

SA= 2*30+2*25+2*30

SA= 60+50+60

SA= 170cm²

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

click to let others know, how is it

0.0

0 votes

1

report

read more on -

step-by-step explanation: