Henry is mixing concrete. To make concrete he needs to mix cement, sand and gravel in the ratio 3 : 2 : 7 by weight. Henry needs to make 180kg of concrete. He has 46kg of cement, 29kg of sand and 105kg of gravel. Which ingredient is Henry short of?

step-by-step explanation:

it's 15

126.66 m²

step-by-step explanation:

the pertinent area formula is a = πr², where r is the radius.

here, a = π(6.35 m)² = 40.32π, or approximately 126.66 m²

in the attachment.   i didn't see your choices.   the word which means there is choices.

step-by-step explanation:

(x,y)

x tells you how much left or right you go from the origin

y tells you how much down or up you go from the origin

so for example (-3,2), you go left 3 and up twice. i denoted which of the ordered pairs is which in my graph.