400.0
r = sqrt(400/pi) = 11.3 cm
397.0
That depends on what place you want it rounded to. -- To the nearest tenth . . . . . . . . . 380.8 -- To the nearest whole number . . 381 -- To the nearest ten. . . . . . . . . . . 380 -- To the nearest hundred. . . . . . . 400 -- To the nearest thousand. . . . . . zero
400
375.0
400.0
399.0 and 400 respectively.
400.0
The square root of 2 to the nearest tenth is 1.4
r = sqrt(400/pi) = 11.3 cm
397.0
546.3
That depends on what place you want it rounded to. -- To the nearest tenth . . . . . . . . . 380.8 -- To the nearest whole number . . 381 -- To the nearest ten. . . . . . . . . . . 380 -- To the nearest hundred. . . . . . . 400 -- To the nearest thousand. . . . . . zero
one tenth of 4000 = 400
396 to the nearest ten is 400. That's right, we're rounding up, honey! No need to play it safe with that 6 hanging around, just bump it on up to the next level.
400