I want to answer 17 and 19 questions
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heya mate here is your answer
17) given,
area = 24cm^2
base = 16.4cm
height = ????
but
area = 1/2 × base × height
so height = 2 × area / base
= ( 2 × 24 ) / 16.4
= 48 / 16.4
= 2.9
( round figure 3 )
19) given,
area = 628cm^2
pi = 3.14
diameter = ??
but diameter = 2 r
area = pi × r^2
628 = 3.14 × r^2
r^2 = 628 / 3.14
r^2 = 200
r = root 200 cm
or 14.14cm
so now diameter = 2 root 200 cm
or 28.28cm
i hope it helps u
17) given,
area = 24cm^2
base = 16.4cm
height = ????
but
area = 1/2 × base × height
so height = 2 × area / base
= ( 2 × 24 ) / 16.4
= 48 / 16.4
= 2.9
( round figure 3 )
19) given,
area = 628cm^2
pi = 3.14
diameter = ??
but diameter = 2 r
area = pi × r^2
628 = 3.14 × r^2
r^2 = 628 / 3.14
r^2 = 200
r = root 200 cm
or 14.14cm
so now diameter = 2 root 200 cm
or 28.28cm
i hope it helps u
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morepradeep:
17 questions from where you taken 2 to multiple 24
..
area = 1/2 × b × h
in this eq
u can see 2 in denominator
when it goes to Rhs frm Lhs
the 2 will jump to numerator
kkk
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