Question

please tell me the answer​

Answer 1

Answer:

1 a. 12/21

b. 14/16

2. √6084 + √60.84 + √0.6084

√78² + √78²/100 + √ 78²/10000

78 + 78/10 + 78/100

78 + 7.8 + 0.78

86.58

3. Area = l×b

1092 = l×13

l = 1092/13 = 84

Let rectangle ABCD,

with diagonal BD, In triangle ABD,

By Pythagoras theorem,

H²=P²+B²

=84²+13²

= 7225

H = √7225 = 85 cm where H is the diagonal

4. Area of Square = 2116 = a²

a² = 2116

a = √2116 = 46