Pls help.
Thanks alot.
Pls help.
Thanks alot.
This is a Matrix question.
Shaded | Unshaded | Total | |
Sqaure | 40 | 1u | 1u + 40 |
Rectangle | 40 | 5u | 5u + 40 |
40 | 6u |
(1u + 40)/2 = (5u + 40) / 5
5u + 200 = 10u + 80
200 – 80 = 10u – 5u
5u = 120
1u = 120 ÷ 5 = 24
6u = 24 × 6 = 144
144 + 40 = 184 cm2
area of —
square : rectangle : total
2u : 5u : 7u
After a shaded area of 40 sq cm is being cut out, the remaining area of —
square : rectangle : total
1p : 5p : 6p
2u ——-> 1p + 40
10u ——-> 5p + 200
5u ——-> 5p + 40
10u ——-> 10p + 80
10p + 80 ——-> 5p + 200
1p ——-> (200 – 80)/(10 – 5) = 24
6p + 40 ——-> 6 x 24 + 40 = 184
or
2u ——-> 24 + 40 = 64
1u ——-> 64/2 = 32
7u – 40 ——-> 7 x 32 – 40 = 184
Ans : 184 sq cm.