An American reported that the diameter of the sun is approximately 8.656*10^5 miles. WRite this in kilometres, using scientific notation written correct to four significant figures. There are 1.609km in a mile. If the sun's diameter is 109 time that of the earth, what is the earth's diameter, correct to three significant figures?
An American reported that the diameter of the sun is approximately 8.656*10^5 miles. WRite this in kilometres, using scientific notation written correct to four significant figures. There are 1.609km in a mile. If the sun's diameter is 109 time that of the earth, what is the earth's diameter, correct to three significant figures?
1 mile =1.609344 km.
[8.656 x 10^5] x 1.609344 =1,393,048.166 km =1.393 x 10^6 km - diameter of the Sun.
1,393,048.166 / 109 =12,780.258 km =1.278 x 10^4 km - diameter of the Earth.
