Dan bought a soft drink for four dollars and four candy bars. He spent a total of sixteen dollars. How much did each candy bar c
1 answer:
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Answer:
and
Step-by-step explanation:
(a)
A = × 4
×
= 2 ×
= ×
← rationalise the denominator
= units²
(b)
Using Pythagoras' identity in the right triangle
let hypotenuse be h , then
h² = (4 )² + (
)²
= 32 +
= +
= ( take the square root of both sides )
h = =
×
← rationalise the denominator
h =