A stone pillar has a mass of 3.0 tonnes, if the area of its base is 0.3m2, calculate the pressure under the pillar.

P = 98100 [N/m2]

Explanation:

To solve this problem we must use the following mathematical expression, which tells us that pressure is the relationship between Force and area.

P = F/A

where:

P = pressure [N/m2]

F = force [N]

A = area [m2]

We must convert the mass from tons to kilograms.

m = 3 [ton] * 1000 [kg/1 *ton] = 3000 [kg]

Force is defined as the product of mass by gravity.

F = 3000*9.81 = 29430 [N]

P = (29430/0.3)

P = 98100 [N/m2]

answer; ///(74) degrees is your answer..

emily ruth's annual premium is $1058.50

step-by-step explanation:

emily ruth is a female of 27 years age purchasing 20 year endowment insurance with face value $25000.

from the given table,

for females, the age of a male 3 years younger should be used.

so, we have to check for 24 year male for 20 year endowment.

it is 42.34 for every $1000 face value.

for a face value of $25000,

it is 25 * 42.34 = $1058.50

∴ emily ruth's annual premium is $1058.50