3. a square metal plate has a density of 10.2 g/cm3 and weighs 2.193 kg.
a. calculate the volume of the plate.
b. if the base of this plate has an area of 25 cm2, determine its thickness.

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year.how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.

Find two numbers if their sum is 91 and the ratio is 6: 7?

Measure a and b and find their sum. how are the angles related?